2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
25 #include "byte-order.h"
26 #include "classifier.h"
29 #include "dynamic-string.h"
32 #include "meta-flow.h"
35 #include "ofp-actions.h"
36 #include "ofp-errors.h"
37 #include "ofp-print.h"
40 #include "ofproto-provider.h"
41 #include "openflow/nicira-ext.h"
42 #include "openflow/openflow.h"
46 #include "poll-loop.h"
52 #include "unaligned.h"
56 VLOG_DEFINE_THIS_MODULE(ofproto
);
58 COVERAGE_DEFINE(ofproto_error
);
59 COVERAGE_DEFINE(ofproto_flush
);
60 COVERAGE_DEFINE(ofproto_no_packet_in
);
61 COVERAGE_DEFINE(ofproto_packet_out
);
62 COVERAGE_DEFINE(ofproto_queue_req
);
63 COVERAGE_DEFINE(ofproto_recv_openflow
);
64 COVERAGE_DEFINE(ofproto_reinit_ports
);
65 COVERAGE_DEFINE(ofproto_uninstallable
);
66 COVERAGE_DEFINE(ofproto_update_port
);
69 S_OPENFLOW
, /* Processing OpenFlow commands. */
70 S_EVICT
, /* Evicting flows from over-limit tables. */
71 S_FLUSH
, /* Deleting all flow table rules. */
74 enum ofoperation_type
{
80 /* A single OpenFlow request can execute any number of operations. The
81 * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the
82 * ofconn to which an error reply should be sent if necessary.
84 * ofproto initiates some operations internally. These operations are still
85 * assigned to groups but will not have an associated ofconn. */
87 struct ofproto
*ofproto
; /* Owning ofproto. */
88 struct list ofproto_node
; /* In ofproto's "pending" list. */
89 struct list ops
; /* List of "struct ofoperation"s. */
91 /* Data needed to send OpenFlow reply on failure or to send a buffered
94 * If list_is_empty(ofconn_node) then this ofopgroup never had an
95 * associated ofconn or its ofconn's connection dropped after it initiated
96 * the operation. In the latter case 'ofconn' is a wild pointer that
97 * refers to freed memory, so the 'ofconn' member must be used only if
98 * !list_is_empty(ofconn_node).
100 struct list ofconn_node
; /* In ofconn's list of pending opgroups. */
101 struct ofconn
*ofconn
; /* ofconn for reply (but see note above). */
102 struct ofp_header
*request
; /* Original request (truncated at 64 bytes). */
103 uint32_t buffer_id
; /* Buffer id from original request. */
104 int error
; /* 0 if no error yet, otherwise error code. */
107 static struct ofopgroup
*ofopgroup_create_unattached(struct ofproto
*);
108 static struct ofopgroup
*ofopgroup_create(struct ofproto
*, struct ofconn
*,
109 const struct ofp_header
*,
111 static void ofopgroup_submit(struct ofopgroup
*);
112 static void ofopgroup_destroy(struct ofopgroup
*);
114 /* A single flow table operation. */
116 struct ofopgroup
*group
; /* Owning group. */
117 struct list group_node
; /* In ofopgroup's "ops" list. */
118 struct hmap_node hmap_node
; /* In ofproto's "deletions" hmap. */
119 struct rule
*rule
; /* Rule being operated upon. */
120 enum ofoperation_type type
; /* Type of operation. */
121 struct rule
*victim
; /* OFOPERATION_ADDING: Replaced rule. */
122 struct ofpact
*ofpacts
; /* OFOPERATION_MODIFYING: Replaced actions. */
123 size_t ofpacts_len
; /* OFOPERATION_MODIFYING: Bytes of ofpacts. */
124 ovs_be64 flow_cookie
; /* Rule's old flow cookie. */
127 static void ofoperation_create(struct ofopgroup
*, struct rule
*,
128 enum ofoperation_type
);
129 static void ofoperation_destroy(struct ofoperation
*);
132 static void oftable_init(struct oftable
*);
133 static void oftable_destroy(struct oftable
*);
135 static void oftable_set_name(struct oftable
*, const char *name
);
137 static void oftable_disable_eviction(struct oftable
*);
138 static void oftable_enable_eviction(struct oftable
*,
139 const struct mf_subfield
*fields
,
142 static void oftable_remove_rule(struct rule
*);
143 static struct rule
*oftable_replace_rule(struct rule
*);
144 static void oftable_substitute_rule(struct rule
*old
, struct rule
*new);
146 /* A set of rules within a single OpenFlow table (oftable) that have the same
147 * values for the oftable's eviction_fields. A rule to be evicted, when one is
148 * needed, is taken from the eviction group that contains the greatest number
151 * An oftable owns any number of eviction groups, each of which contains any
154 * Membership in an eviction group is imprecise, based on the hash of the
155 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
156 * That is, if two rules have different eviction_fields, but those
157 * eviction_fields hash to the same value, then they will belong to the same
158 * eviction_group anyway.
160 * (When eviction is not enabled on an oftable, we don't track any eviction
161 * groups, to save time and space.) */
162 struct eviction_group
{
163 struct hmap_node id_node
; /* In oftable's "eviction_groups_by_id". */
164 struct heap_node size_node
; /* In oftable's "eviction_groups_by_size". */
165 struct heap rules
; /* Contains "struct rule"s. */
168 static struct rule
*choose_rule_to_evict(struct oftable
*);
169 static void ofproto_evict(struct ofproto
*);
170 static uint32_t rule_eviction_priority(struct rule
*);
173 static void ofport_destroy__(struct ofport
*);
174 static void ofport_destroy(struct ofport
*);
176 static void update_port(struct ofproto
*, const char *devname
);
177 static int init_ports(struct ofproto
*);
178 static void reinit_ports(struct ofproto
*);
181 static void ofproto_rule_destroy__(struct rule
*);
182 static void ofproto_rule_send_removed(struct rule
*, uint8_t reason
);
183 static bool rule_is_modifiable(const struct rule
*);
184 static bool rule_is_hidden(const struct rule
*);
187 static enum ofperr
add_flow(struct ofproto
*, struct ofconn
*,
188 const struct ofputil_flow_mod
*,
189 const struct ofp_header
*);
190 static void delete_flow__(struct rule
*, struct ofopgroup
*);
191 static bool handle_openflow(struct ofconn
*, struct ofpbuf
*);
192 static enum ofperr
handle_flow_mod__(struct ofproto
*, struct ofconn
*,
193 const struct ofputil_flow_mod
*,
194 const struct ofp_header
*);
197 static uint64_t pick_datapath_id(const struct ofproto
*);
198 static uint64_t pick_fallback_dpid(void);
199 static void ofproto_destroy__(struct ofproto
*);
200 static void update_mtu(struct ofproto
*, struct ofport
*);
203 static void ofproto_unixctl_init(void);
205 /* All registered ofproto classes, in probe order. */
206 static const struct ofproto_class
**ofproto_classes
;
207 static size_t n_ofproto_classes
;
208 static size_t allocated_ofproto_classes
;
210 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
211 static struct hmap all_ofprotos
= HMAP_INITIALIZER(&all_ofprotos
);
213 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
216 ofproto_initialize(void)
222 ofproto_class_register(&ofproto_dpif_class
);
226 /* 'type' should be a normalized datapath type, as returned by
227 * ofproto_normalize_type(). Returns the corresponding ofproto_class
228 * structure, or a null pointer if there is none registered for 'type'. */
229 static const struct ofproto_class
*
230 ofproto_class_find__(const char *type
)
234 ofproto_initialize();
235 for (i
= 0; i
< n_ofproto_classes
; i
++) {
236 const struct ofproto_class
*class = ofproto_classes
[i
];
241 class->enumerate_types(&types
);
242 found
= sset_contains(&types
, type
);
243 sset_destroy(&types
);
249 VLOG_WARN("unknown datapath type %s", type
);
253 /* Registers a new ofproto class. After successful registration, new ofprotos
254 * of that type can be created using ofproto_create(). */
256 ofproto_class_register(const struct ofproto_class
*new_class
)
260 for (i
= 0; i
< n_ofproto_classes
; i
++) {
261 if (ofproto_classes
[i
] == new_class
) {
266 if (n_ofproto_classes
>= allocated_ofproto_classes
) {
267 ofproto_classes
= x2nrealloc(ofproto_classes
,
268 &allocated_ofproto_classes
,
269 sizeof *ofproto_classes
);
271 ofproto_classes
[n_ofproto_classes
++] = new_class
;
275 /* Unregisters a datapath provider. 'type' must have been previously
276 * registered and not currently be in use by any ofprotos. After
277 * unregistration new datapaths of that type cannot be opened using
278 * ofproto_create(). */
280 ofproto_class_unregister(const struct ofproto_class
*class)
284 for (i
= 0; i
< n_ofproto_classes
; i
++) {
285 if (ofproto_classes
[i
] == class) {
286 for (i
++; i
< n_ofproto_classes
; i
++) {
287 ofproto_classes
[i
- 1] = ofproto_classes
[i
];
293 VLOG_WARN("attempted to unregister an ofproto class that is not "
298 /* Clears 'types' and enumerates all registered ofproto types into it. The
299 * caller must first initialize the sset. */
301 ofproto_enumerate_types(struct sset
*types
)
305 ofproto_initialize();
306 for (i
= 0; i
< n_ofproto_classes
; i
++) {
307 ofproto_classes
[i
]->enumerate_types(types
);
311 /* Returns the fully spelled out name for the given ofproto 'type'.
313 * Normalized type string can be compared with strcmp(). Unnormalized type
314 * string might be the same even if they have different spellings. */
316 ofproto_normalize_type(const char *type
)
318 return type
&& type
[0] ? type
: "system";
321 /* Clears 'names' and enumerates the names of all known created ofprotos with
322 * the given 'type'. The caller must first initialize the sset. Returns 0 if
323 * successful, otherwise a positive errno value.
325 * Some kinds of datapaths might not be practically enumerable. This is not
326 * considered an error. */
328 ofproto_enumerate_names(const char *type
, struct sset
*names
)
330 const struct ofproto_class
*class = ofproto_class_find__(type
);
331 return class ? class->enumerate_names(type
, names
) : EAFNOSUPPORT
;
335 ofproto_create(const char *datapath_name
, const char *datapath_type
,
336 struct ofproto
**ofprotop
)
338 const struct ofproto_class
*class;
339 struct ofproto
*ofproto
;
344 ofproto_initialize();
345 ofproto_unixctl_init();
347 datapath_type
= ofproto_normalize_type(datapath_type
);
348 class = ofproto_class_find__(datapath_type
);
350 VLOG_WARN("could not create datapath %s of unknown type %s",
351 datapath_name
, datapath_type
);
355 ofproto
= class->alloc();
357 VLOG_ERR("failed to allocate datapath %s of type %s",
358 datapath_name
, datapath_type
);
363 memset(ofproto
, 0, sizeof *ofproto
);
364 ofproto
->ofproto_class
= class;
365 ofproto
->name
= xstrdup(datapath_name
);
366 ofproto
->type
= xstrdup(datapath_type
);
367 hmap_insert(&all_ofprotos
, &ofproto
->hmap_node
,
368 hash_string(ofproto
->name
, 0));
369 ofproto
->datapath_id
= 0;
370 ofproto_set_flow_eviction_threshold(ofproto
,
371 OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT
);
372 ofproto
->forward_bpdu
= false;
373 ofproto
->fallback_dpid
= pick_fallback_dpid();
374 ofproto
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
375 ofproto
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
376 ofproto
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
377 ofproto
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
378 ofproto
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
379 ofproto
->frag_handling
= OFPC_FRAG_NORMAL
;
380 hmap_init(&ofproto
->ports
);
381 shash_init(&ofproto
->port_by_name
);
382 ofproto
->tables
= NULL
;
383 ofproto
->n_tables
= 0;
384 ofproto
->connmgr
= connmgr_create(ofproto
, datapath_name
, datapath_name
);
385 ofproto
->state
= S_OPENFLOW
;
386 list_init(&ofproto
->pending
);
387 ofproto
->n_pending
= 0;
388 hmap_init(&ofproto
->deletions
);
389 ofproto
->n_add
= ofproto
->n_delete
= ofproto
->n_modify
= 0;
390 ofproto
->first_op
= ofproto
->last_op
= LLONG_MIN
;
391 ofproto
->next_op_report
= LLONG_MAX
;
392 ofproto
->op_backoff
= LLONG_MIN
;
393 ofproto
->vlan_bitmap
= NULL
;
394 ofproto
->vlans_changed
= false;
395 ofproto
->min_mtu
= INT_MAX
;
397 error
= ofproto
->ofproto_class
->construct(ofproto
);
399 VLOG_ERR("failed to open datapath %s: %s",
400 datapath_name
, strerror(error
));
401 ofproto_destroy__(ofproto
);
405 assert(ofproto
->n_tables
);
407 ofproto
->datapath_id
= pick_datapath_id(ofproto
);
415 ofproto_init_tables(struct ofproto
*ofproto
, int n_tables
)
417 struct oftable
*table
;
419 assert(!ofproto
->n_tables
);
420 assert(n_tables
>= 1 && n_tables
<= 255);
422 ofproto
->n_tables
= n_tables
;
423 ofproto
->tables
= xmalloc(n_tables
* sizeof *ofproto
->tables
);
424 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
430 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
432 return ofproto
->datapath_id
;
436 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
438 uint64_t old_dpid
= p
->datapath_id
;
439 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
440 if (p
->datapath_id
!= old_dpid
) {
441 /* Force all active connections to reconnect, since there is no way to
442 * notify a controller that the datapath ID has changed. */
443 ofproto_reconnect_controllers(p
);
448 ofproto_set_controllers(struct ofproto
*p
,
449 const struct ofproto_controller
*controllers
,
450 size_t n_controllers
)
452 connmgr_set_controllers(p
->connmgr
, controllers
, n_controllers
);
456 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
458 connmgr_set_fail_mode(p
->connmgr
, fail_mode
);
461 /* Drops the connections between 'ofproto' and all of its controllers, forcing
462 * them to reconnect. */
464 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
466 connmgr_reconnect(ofproto
->connmgr
);
469 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
470 * in-band control should guarantee access, in the same way that in-band
471 * control guarantees access to OpenFlow controllers. */
473 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
474 const struct sockaddr_in
*extras
, size_t n
)
476 connmgr_set_extra_in_band_remotes(ofproto
->connmgr
, extras
, n
);
479 /* Sets the OpenFlow queue used by flows set up by in-band control on
480 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
481 * flows will use the default queue. */
483 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
485 connmgr_set_in_band_queue(ofproto
->connmgr
, queue_id
);
488 /* Sets the number of flows at which eviction from the kernel flow table
491 ofproto_set_flow_eviction_threshold(struct ofproto
*ofproto
, unsigned threshold
)
493 if (threshold
< OFPROTO_FLOW_EVICTION_THRESHOLD_MIN
) {
494 ofproto
->flow_eviction_threshold
= OFPROTO_FLOW_EVICTION_THRESHOLD_MIN
;
496 ofproto
->flow_eviction_threshold
= threshold
;
500 /* If forward_bpdu is true, the NORMAL action will forward frames with
501 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
502 * the NORMAL action will drop these frames. */
504 ofproto_set_forward_bpdu(struct ofproto
*ofproto
, bool forward_bpdu
)
506 bool old_val
= ofproto
->forward_bpdu
;
507 ofproto
->forward_bpdu
= forward_bpdu
;
508 if (old_val
!= ofproto
->forward_bpdu
) {
509 if (ofproto
->ofproto_class
->forward_bpdu_changed
) {
510 ofproto
->ofproto_class
->forward_bpdu_changed(ofproto
);
515 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
516 * 'idle_time', in seconds. */
518 ofproto_set_mac_idle_time(struct ofproto
*ofproto
, unsigned idle_time
)
520 if (ofproto
->ofproto_class
->set_mac_idle_time
) {
521 ofproto
->ofproto_class
->set_mac_idle_time(ofproto
, idle_time
);
526 ofproto_set_desc(struct ofproto
*p
,
527 const char *mfr_desc
, const char *hw_desc
,
528 const char *sw_desc
, const char *serial_desc
,
531 struct ofp_desc_stats
*ods
;
534 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
535 VLOG_WARN("%s: truncating mfr_desc, must be less than %zu bytes",
536 p
->name
, sizeof ods
->mfr_desc
);
539 p
->mfr_desc
= xstrdup(mfr_desc
);
542 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
543 VLOG_WARN("%s: truncating hw_desc, must be less than %zu bytes",
544 p
->name
, sizeof ods
->hw_desc
);
547 p
->hw_desc
= xstrdup(hw_desc
);
550 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
551 VLOG_WARN("%s: truncating sw_desc, must be less than %zu bytes",
552 p
->name
, sizeof ods
->sw_desc
);
555 p
->sw_desc
= xstrdup(sw_desc
);
558 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
559 VLOG_WARN("%s: truncating serial_desc, must be less than %zu "
560 "bytes", p
->name
, sizeof ods
->serial_num
);
562 free(p
->serial_desc
);
563 p
->serial_desc
= xstrdup(serial_desc
);
566 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
567 VLOG_WARN("%s: truncating dp_desc, must be less than %zu bytes",
568 p
->name
, sizeof ods
->dp_desc
);
571 p
->dp_desc
= xstrdup(dp_desc
);
576 ofproto_set_snoops(struct ofproto
*ofproto
, const struct sset
*snoops
)
578 return connmgr_set_snoops(ofproto
->connmgr
, snoops
);
582 ofproto_set_netflow(struct ofproto
*ofproto
,
583 const struct netflow_options
*nf_options
)
585 if (nf_options
&& sset_is_empty(&nf_options
->collectors
)) {
589 if (ofproto
->ofproto_class
->set_netflow
) {
590 return ofproto
->ofproto_class
->set_netflow(ofproto
, nf_options
);
592 return nf_options
? EOPNOTSUPP
: 0;
597 ofproto_set_sflow(struct ofproto
*ofproto
,
598 const struct ofproto_sflow_options
*oso
)
600 if (oso
&& sset_is_empty(&oso
->targets
)) {
604 if (ofproto
->ofproto_class
->set_sflow
) {
605 return ofproto
->ofproto_class
->set_sflow(ofproto
, oso
);
607 return oso
? EOPNOTSUPP
: 0;
611 /* Spanning Tree Protocol (STP) configuration. */
613 /* Configures STP on 'ofproto' using the settings defined in 's'. If
614 * 's' is NULL, disables STP.
616 * Returns 0 if successful, otherwise a positive errno value. */
618 ofproto_set_stp(struct ofproto
*ofproto
,
619 const struct ofproto_stp_settings
*s
)
621 return (ofproto
->ofproto_class
->set_stp
622 ? ofproto
->ofproto_class
->set_stp(ofproto
, s
)
626 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
627 * 'enabled' member of 's' is false, then the other members are not
630 * Returns 0 if successful, otherwise a positive errno value. */
632 ofproto_get_stp_status(struct ofproto
*ofproto
,
633 struct ofproto_stp_status
*s
)
635 return (ofproto
->ofproto_class
->get_stp_status
636 ? ofproto
->ofproto_class
->get_stp_status(ofproto
, s
)
640 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
641 * in 's'. The caller is responsible for assigning STP port numbers
642 * (using the 'port_num' member in the range of 1 through 255, inclusive)
643 * and ensuring there are no duplicates. If the 's' is NULL, then STP
644 * is disabled on the port.
646 * Returns 0 if successful, otherwise a positive errno value.*/
648 ofproto_port_set_stp(struct ofproto
*ofproto
, uint16_t ofp_port
,
649 const struct ofproto_port_stp_settings
*s
)
651 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
653 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16
,
654 ofproto
->name
, ofp_port
);
658 return (ofproto
->ofproto_class
->set_stp_port
659 ? ofproto
->ofproto_class
->set_stp_port(ofport
, s
)
663 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
664 * 's'. If the 'enabled' member in 's' is false, then the other members
665 * are not meaningful.
667 * Returns 0 if successful, otherwise a positive errno value.*/
669 ofproto_port_get_stp_status(struct ofproto
*ofproto
, uint16_t ofp_port
,
670 struct ofproto_port_stp_status
*s
)
672 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
674 VLOG_WARN_RL(&rl
, "%s: cannot get STP status on nonexistent "
675 "port %"PRIu16
, ofproto
->name
, ofp_port
);
679 return (ofproto
->ofproto_class
->get_stp_port_status
680 ? ofproto
->ofproto_class
->get_stp_port_status(ofport
, s
)
684 /* Queue DSCP configuration. */
686 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
687 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
688 * to implement QoS. Instead, it is used to implement features which require
689 * knowledge of what queues exist on a port, and some basic information about
692 * Returns 0 if successful, otherwise a positive errno value. */
694 ofproto_port_set_queues(struct ofproto
*ofproto
, uint16_t ofp_port
,
695 const struct ofproto_port_queue
*queues
,
698 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
701 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16
,
702 ofproto
->name
, ofp_port
);
706 return (ofproto
->ofproto_class
->set_queues
707 ? ofproto
->ofproto_class
->set_queues(ofport
, queues
, n_queues
)
711 /* Connectivity Fault Management configuration. */
713 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
715 ofproto_port_clear_cfm(struct ofproto
*ofproto
, uint16_t ofp_port
)
717 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
718 if (ofport
&& ofproto
->ofproto_class
->set_cfm
) {
719 ofproto
->ofproto_class
->set_cfm(ofport
, NULL
);
723 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
724 * basic configuration from the configuration members in 'cfm', and the remote
725 * maintenance point ID from remote_mpid. Ignores the statistics members of
728 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
730 ofproto_port_set_cfm(struct ofproto
*ofproto
, uint16_t ofp_port
,
731 const struct cfm_settings
*s
)
733 struct ofport
*ofport
;
736 ofport
= ofproto_get_port(ofproto
, ofp_port
);
738 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16
,
739 ofproto
->name
, ofp_port
);
743 /* XXX: For configuration simplicity, we only support one remote_mpid
744 * outside of the CFM module. It's not clear if this is the correct long
745 * term solution or not. */
746 error
= (ofproto
->ofproto_class
->set_cfm
747 ? ofproto
->ofproto_class
->set_cfm(ofport
, s
)
750 VLOG_WARN("%s: CFM configuration on port %"PRIu16
" (%s) failed (%s)",
751 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
756 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
757 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
758 * 0 if LACP partner information is not current (generally indicating a
759 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
761 ofproto_port_is_lacp_current(struct ofproto
*ofproto
, uint16_t ofp_port
)
763 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
764 return (ofport
&& ofproto
->ofproto_class
->port_is_lacp_current
765 ? ofproto
->ofproto_class
->port_is_lacp_current(ofport
)
771 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
772 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
773 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
774 * configuration plus, if there is more than one slave, a bonding
777 * If 'aux' is already registered then this function updates its configuration
778 * to 's'. Otherwise, this function registers a new bundle.
780 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
783 ofproto_bundle_register(struct ofproto
*ofproto
, void *aux
,
784 const struct ofproto_bundle_settings
*s
)
786 return (ofproto
->ofproto_class
->bundle_set
787 ? ofproto
->ofproto_class
->bundle_set(ofproto
, aux
, s
)
791 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
792 * If no such bundle has been registered, this has no effect. */
794 ofproto_bundle_unregister(struct ofproto
*ofproto
, void *aux
)
796 return ofproto_bundle_register(ofproto
, aux
, NULL
);
800 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
801 * If 'aux' is already registered then this function updates its configuration
802 * to 's'. Otherwise, this function registers a new mirror. */
804 ofproto_mirror_register(struct ofproto
*ofproto
, void *aux
,
805 const struct ofproto_mirror_settings
*s
)
807 return (ofproto
->ofproto_class
->mirror_set
808 ? ofproto
->ofproto_class
->mirror_set(ofproto
, aux
, s
)
812 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
813 * If no mirror has been registered, this has no effect. */
815 ofproto_mirror_unregister(struct ofproto
*ofproto
, void *aux
)
817 return ofproto_mirror_register(ofproto
, aux
, NULL
);
820 /* Retrieves statistics from mirror associated with client data pointer
821 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
822 * 'bytes', respectively. If a particular counters is not supported,
823 * the appropriate argument is set to UINT64_MAX. */
825 ofproto_mirror_get_stats(struct ofproto
*ofproto
, void *aux
,
826 uint64_t *packets
, uint64_t *bytes
)
828 if (!ofproto
->ofproto_class
->mirror_get_stats
) {
829 *packets
= *bytes
= UINT64_MAX
;
833 return ofproto
->ofproto_class
->mirror_get_stats(ofproto
, aux
,
837 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
838 * which all packets are flooded, instead of using MAC learning. If
839 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
841 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
844 ofproto_set_flood_vlans(struct ofproto
*ofproto
, unsigned long *flood_vlans
)
846 return (ofproto
->ofproto_class
->set_flood_vlans
847 ? ofproto
->ofproto_class
->set_flood_vlans(ofproto
, flood_vlans
)
851 /* Returns true if 'aux' is a registered bundle that is currently in use as the
852 * output for a mirror. */
854 ofproto_is_mirror_output_bundle(const struct ofproto
*ofproto
, void *aux
)
856 return (ofproto
->ofproto_class
->is_mirror_output_bundle
857 ? ofproto
->ofproto_class
->is_mirror_output_bundle(ofproto
, aux
)
861 /* Configuration of OpenFlow tables. */
863 /* Returns the number of OpenFlow tables in 'ofproto'. */
865 ofproto_get_n_tables(const struct ofproto
*ofproto
)
867 return ofproto
->n_tables
;
870 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
871 * settings from 's'. 'table_id' must be in the range 0 through the number of
872 * OpenFlow tables in 'ofproto' minus 1, inclusive.
874 * For read-only tables, only the name may be configured. */
876 ofproto_configure_table(struct ofproto
*ofproto
, int table_id
,
877 const struct ofproto_table_settings
*s
)
879 struct oftable
*table
;
881 assert(table_id
>= 0 && table_id
< ofproto
->n_tables
);
882 table
= &ofproto
->tables
[table_id
];
884 oftable_set_name(table
, s
->name
);
886 if (table
->flags
& OFTABLE_READONLY
) {
891 oftable_enable_eviction(table
, s
->groups
, s
->n_groups
);
893 oftable_disable_eviction(table
);
896 table
->max_flows
= s
->max_flows
;
897 if (classifier_count(&table
->cls
) > table
->max_flows
898 && table
->eviction_fields
) {
899 /* 'table' contains more flows than allowed. We might not be able to
900 * evict them right away because of the asynchronous nature of flow
901 * table changes. Schedule eviction for later. */
902 switch (ofproto
->state
) {
904 ofproto
->state
= S_EVICT
;
908 /* We're already deleting flows, nothing more to do. */
915 ofproto_has_snoops(const struct ofproto
*ofproto
)
917 return connmgr_has_snoops(ofproto
->connmgr
);
921 ofproto_get_snoops(const struct ofproto
*ofproto
, struct sset
*snoops
)
923 connmgr_get_snoops(ofproto
->connmgr
, snoops
);
927 ofproto_flush__(struct ofproto
*ofproto
)
929 struct ofopgroup
*group
;
930 struct oftable
*table
;
932 if (ofproto
->ofproto_class
->flush
) {
933 ofproto
->ofproto_class
->flush(ofproto
);
936 group
= ofopgroup_create_unattached(ofproto
);
937 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
938 struct rule
*rule
, *next_rule
;
939 struct cls_cursor cursor
;
941 if (table
->flags
& OFTABLE_HIDDEN
) {
945 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
946 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
947 if (!rule
->pending
) {
948 ofoperation_create(group
, rule
, OFOPERATION_DELETE
);
949 oftable_remove_rule(rule
);
950 ofproto
->ofproto_class
->rule_destruct(rule
);
954 ofopgroup_submit(group
);
958 ofproto_destroy__(struct ofproto
*ofproto
)
960 struct oftable
*table
;
962 assert(list_is_empty(&ofproto
->pending
));
963 assert(!ofproto
->n_pending
);
965 connmgr_destroy(ofproto
->connmgr
);
967 hmap_remove(&all_ofprotos
, &ofproto
->hmap_node
);
970 free(ofproto
->mfr_desc
);
971 free(ofproto
->hw_desc
);
972 free(ofproto
->sw_desc
);
973 free(ofproto
->serial_desc
);
974 free(ofproto
->dp_desc
);
975 hmap_destroy(&ofproto
->ports
);
976 shash_destroy(&ofproto
->port_by_name
);
978 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
979 oftable_destroy(table
);
981 free(ofproto
->tables
);
983 hmap_destroy(&ofproto
->deletions
);
985 free(ofproto
->vlan_bitmap
);
987 ofproto
->ofproto_class
->dealloc(ofproto
);
991 ofproto_destroy(struct ofproto
*p
)
993 struct ofport
*ofport
, *next_ofport
;
1000 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
1001 ofport_destroy(ofport
);
1004 p
->ofproto_class
->destruct(p
);
1005 ofproto_destroy__(p
);
1008 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1009 * kernel datapath, for example, this destroys the datapath in the kernel, and
1010 * with the netdev-based datapath, it tears down the data structures that
1011 * represent the datapath.
1013 * The datapath should not be currently open as an ofproto. */
1015 ofproto_delete(const char *name
, const char *type
)
1017 const struct ofproto_class
*class = ofproto_class_find__(type
);
1018 return (!class ? EAFNOSUPPORT
1019 : !class->del
? EACCES
1020 : class->del(type
, name
));
1024 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1026 if (error
== ENOBUFS
) {
1027 reinit_ports(ofproto
);
1028 } else if (!error
) {
1029 update_port(ofproto
, devname
);
1035 ofproto_run(struct ofproto
*p
)
1037 struct sset changed_netdevs
;
1038 const char *changed_netdev
;
1039 struct ofport
*ofport
;
1042 error
= p
->ofproto_class
->run(p
);
1043 if (error
&& error
!= EAGAIN
) {
1044 VLOG_ERR_RL(&rl
, "%s: run failed (%s)", p
->name
, strerror(error
));
1047 if (p
->ofproto_class
->port_poll
) {
1050 while ((error
= p
->ofproto_class
->port_poll(p
, &devname
)) != EAGAIN
) {
1051 process_port_change(p
, error
, devname
);
1055 /* Update OpenFlow port status for any port whose netdev has changed.
1057 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1058 * destroyed, so it's not safe to update ports directly from the
1059 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1060 * need this two-phase approach. */
1061 sset_init(&changed_netdevs
);
1062 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1063 unsigned int change_seq
= netdev_change_seq(ofport
->netdev
);
1064 if (ofport
->change_seq
!= change_seq
) {
1065 ofport
->change_seq
= change_seq
;
1066 sset_add(&changed_netdevs
, netdev_get_name(ofport
->netdev
));
1069 SSET_FOR_EACH (changed_netdev
, &changed_netdevs
) {
1070 update_port(p
, changed_netdev
);
1072 sset_destroy(&changed_netdevs
);
1076 connmgr_run(p
->connmgr
, handle_openflow
);
1080 connmgr_run(p
->connmgr
, NULL
);
1082 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1083 p
->state
= S_OPENFLOW
;
1088 connmgr_run(p
->connmgr
, NULL
);
1090 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1091 connmgr_flushed(p
->connmgr
);
1092 p
->state
= S_OPENFLOW
;
1100 if (time_msec() >= p
->next_op_report
) {
1101 long long int ago
= (time_msec() - p
->first_op
) / 1000;
1102 long long int interval
= (p
->last_op
- p
->first_op
) / 1000;
1106 ds_put_format(&s
, "%d flow_mods ",
1107 p
->n_add
+ p
->n_delete
+ p
->n_modify
);
1108 if (interval
== ago
) {
1109 ds_put_format(&s
, "in the last %lld s", ago
);
1110 } else if (interval
) {
1111 ds_put_format(&s
, "in the %lld s starting %lld s ago",
1114 ds_put_format(&s
, "%lld s ago", ago
);
1117 ds_put_cstr(&s
, " (");
1119 ds_put_format(&s
, "%d adds, ", p
->n_add
);
1122 ds_put_format(&s
, "%d deletes, ", p
->n_delete
);
1125 ds_put_format(&s
, "%d modifications, ", p
->n_modify
);
1128 ds_put_char(&s
, ')');
1130 VLOG_INFO("%s: %s", p
->name
, ds_cstr(&s
));
1133 p
->n_add
= p
->n_delete
= p
->n_modify
= 0;
1134 p
->next_op_report
= LLONG_MAX
;
1140 /* Performs periodic activity required by 'ofproto' that needs to be done
1141 * with the least possible latency.
1143 * It makes sense to call this function a couple of times per poll loop, to
1144 * provide a significant performance boost on some benchmarks with the
1145 * ofproto-dpif implementation. */
1147 ofproto_run_fast(struct ofproto
*p
)
1151 error
= p
->ofproto_class
->run_fast
? p
->ofproto_class
->run_fast(p
) : 0;
1152 if (error
&& error
!= EAGAIN
) {
1153 VLOG_ERR_RL(&rl
, "%s: fastpath run failed (%s)",
1154 p
->name
, strerror(error
));
1160 ofproto_wait(struct ofproto
*p
)
1162 struct ofport
*ofport
;
1164 p
->ofproto_class
->wait(p
);
1165 if (p
->ofproto_class
->port_poll_wait
) {
1166 p
->ofproto_class
->port_poll_wait(p
);
1169 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1170 if (ofport
->change_seq
!= netdev_change_seq(ofport
->netdev
)) {
1171 poll_immediate_wake();
1177 connmgr_wait(p
->connmgr
, true);
1182 connmgr_wait(p
->connmgr
, false);
1183 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1184 poll_immediate_wake();
1191 ofproto_is_alive(const struct ofproto
*p
)
1193 return connmgr_has_controllers(p
->connmgr
);
1196 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1197 * memory_report(). */
1199 ofproto_get_memory_usage(const struct ofproto
*ofproto
, struct simap
*usage
)
1201 const struct oftable
*table
;
1202 unsigned int n_rules
;
1204 simap_increase(usage
, "ports", hmap_count(&ofproto
->ports
));
1205 simap_increase(usage
, "ops",
1206 ofproto
->n_pending
+ hmap_count(&ofproto
->deletions
));
1209 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1210 n_rules
+= classifier_count(&table
->cls
);
1212 simap_increase(usage
, "rules", n_rules
);
1214 if (ofproto
->ofproto_class
->get_memory_usage
) {
1215 ofproto
->ofproto_class
->get_memory_usage(ofproto
, usage
);
1218 connmgr_get_memory_usage(ofproto
->connmgr
, usage
);
1222 ofproto_get_ofproto_controller_info(const struct ofproto
*ofproto
,
1225 connmgr_get_controller_info(ofproto
->connmgr
, info
);
1229 ofproto_free_ofproto_controller_info(struct shash
*info
)
1231 connmgr_free_controller_info(info
);
1234 /* Makes a deep copy of 'old' into 'port'. */
1236 ofproto_port_clone(struct ofproto_port
*port
, const struct ofproto_port
*old
)
1238 port
->name
= xstrdup(old
->name
);
1239 port
->type
= xstrdup(old
->type
);
1240 port
->ofp_port
= old
->ofp_port
;
1243 /* Frees memory allocated to members of 'ofproto_port'.
1245 * Do not call this function on an ofproto_port obtained from
1246 * ofproto_port_dump_next(): that function retains ownership of the data in the
1249 ofproto_port_destroy(struct ofproto_port
*ofproto_port
)
1251 free(ofproto_port
->name
);
1252 free(ofproto_port
->type
);
1255 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1257 * This function provides no status indication. An error status for the entire
1258 * dump operation is provided when it is completed by calling
1259 * ofproto_port_dump_done().
1262 ofproto_port_dump_start(struct ofproto_port_dump
*dump
,
1263 const struct ofproto
*ofproto
)
1265 dump
->ofproto
= ofproto
;
1266 dump
->error
= ofproto
->ofproto_class
->port_dump_start(ofproto
,
1270 /* Attempts to retrieve another port from 'dump', which must have been created
1271 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1272 * 'port' and returns true. On failure, returns false.
1274 * Failure might indicate an actual error or merely that the last port has been
1275 * dumped. An error status for the entire dump operation is provided when it
1276 * is completed by calling ofproto_port_dump_done().
1278 * The ofproto owns the data stored in 'port'. It will remain valid until at
1279 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1280 * ofproto_port_dump_done(). */
1282 ofproto_port_dump_next(struct ofproto_port_dump
*dump
,
1283 struct ofproto_port
*port
)
1285 const struct ofproto
*ofproto
= dump
->ofproto
;
1291 dump
->error
= ofproto
->ofproto_class
->port_dump_next(ofproto
, dump
->state
,
1294 ofproto
->ofproto_class
->port_dump_done(ofproto
, dump
->state
);
1300 /* Completes port table dump operation 'dump', which must have been created
1301 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1302 * error-free, otherwise a positive errno value describing the problem. */
1304 ofproto_port_dump_done(struct ofproto_port_dump
*dump
)
1306 const struct ofproto
*ofproto
= dump
->ofproto
;
1308 dump
->error
= ofproto
->ofproto_class
->port_dump_done(ofproto
,
1311 return dump
->error
== EOF
? 0 : dump
->error
;
1314 /* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0
1315 * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp'
1316 * is non-null). On failure, returns a positive errno value and sets
1317 * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */
1319 ofproto_port_add(struct ofproto
*ofproto
, struct netdev
*netdev
,
1320 uint16_t *ofp_portp
)
1325 error
= ofproto
->ofproto_class
->port_add(ofproto
, netdev
, &ofp_port
);
1327 update_port(ofproto
, netdev_get_name(netdev
));
1330 *ofp_portp
= error
? OFPP_NONE
: ofp_port
;
1335 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1336 * initializes '*port' appropriately; on failure, returns a positive errno
1339 * The caller owns the data in 'ofproto_port' and must free it with
1340 * ofproto_port_destroy() when it is no longer needed. */
1342 ofproto_port_query_by_name(const struct ofproto
*ofproto
, const char *devname
,
1343 struct ofproto_port
*port
)
1347 error
= ofproto
->ofproto_class
->port_query_by_name(ofproto
, devname
, port
);
1349 memset(port
, 0, sizeof *port
);
1354 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1355 * Returns 0 if successful, otherwise a positive errno. */
1357 ofproto_port_del(struct ofproto
*ofproto
, uint16_t ofp_port
)
1359 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
1360 const char *name
= ofport
? netdev_get_name(ofport
->netdev
) : "<unknown>";
1363 error
= ofproto
->ofproto_class
->port_del(ofproto
, ofp_port
);
1364 if (!error
&& ofport
) {
1365 /* 'name' is the netdev's name and update_port() is going to close the
1366 * netdev. Just in case update_port() refers to 'name' after it
1367 * destroys 'ofport', make a copy of it around the update_port()
1369 char *devname
= xstrdup(name
);
1370 update_port(ofproto
, devname
);
1376 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
1377 * performs the 'n_actions' actions in 'actions'. The new flow will not
1380 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1381 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1382 * controllers; otherwise, it will be hidden.
1384 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
1386 * This is a helper function for in-band control and fail-open. */
1388 ofproto_add_flow(struct ofproto
*ofproto
, const struct cls_rule
*cls_rule
,
1389 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
1391 const struct rule
*rule
;
1393 rule
= rule_from_cls_rule(classifier_find_rule_exactly(
1394 &ofproto
->tables
[0].cls
, cls_rule
));
1395 if (!rule
|| !ofpacts_equal(rule
->ofpacts
, rule
->ofpacts_len
,
1396 ofpacts
, ofpacts_len
)) {
1397 struct ofputil_flow_mod fm
;
1399 memset(&fm
, 0, sizeof fm
);
1401 fm
.buffer_id
= UINT32_MAX
;
1402 fm
.ofpacts
= xmemdup(ofpacts
, ofpacts_len
);
1403 fm
.ofpacts_len
= ofpacts_len
;
1404 add_flow(ofproto
, NULL
, &fm
, NULL
);
1409 /* Executes the flow modification specified in 'fm'. Returns 0 on success, an
1410 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
1411 * operation cannot be initiated now but may be retried later.
1413 * This is a helper function for in-band control and fail-open. */
1415 ofproto_flow_mod(struct ofproto
*ofproto
, const struct ofputil_flow_mod
*fm
)
1417 return handle_flow_mod__(ofproto
, NULL
, fm
, NULL
);
1420 /* Searches for a rule with matching criteria exactly equal to 'target' in
1421 * ofproto's table 0 and, if it finds one, deletes it.
1423 * This is a helper function for in-band control and fail-open. */
1425 ofproto_delete_flow(struct ofproto
*ofproto
, const struct cls_rule
*target
)
1429 rule
= rule_from_cls_rule(classifier_find_rule_exactly(
1430 &ofproto
->tables
[0].cls
, target
));
1432 /* No such rule -> success. */
1434 } else if (rule
->pending
) {
1435 /* An operation on the rule is already pending -> failure.
1436 * Caller must retry later if it's important. */
1439 /* Initiate deletion -> success. */
1440 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
1441 ofoperation_create(group
, rule
, OFOPERATION_DELETE
);
1442 oftable_remove_rule(rule
);
1443 ofproto
->ofproto_class
->rule_destruct(rule
);
1444 ofopgroup_submit(group
);
1450 /* Starts the process of deleting all of the flows from all of ofproto's flow
1451 * tables and then reintroducing the flows required by in-band control and
1452 * fail-open. The process will complete in a later call to ofproto_run(). */
1454 ofproto_flush_flows(struct ofproto
*ofproto
)
1456 COVERAGE_INC(ofproto_flush
);
1457 ofproto
->state
= S_FLUSH
;
1461 reinit_ports(struct ofproto
*p
)
1463 struct ofproto_port_dump dump
;
1464 struct sset devnames
;
1465 struct ofport
*ofport
;
1466 struct ofproto_port ofproto_port
;
1467 const char *devname
;
1469 COVERAGE_INC(ofproto_reinit_ports
);
1471 sset_init(&devnames
);
1472 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1473 sset_add(&devnames
, netdev_get_name(ofport
->netdev
));
1475 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
1476 sset_add(&devnames
, ofproto_port
.name
);
1479 SSET_FOR_EACH (devname
, &devnames
) {
1480 update_port(p
, devname
);
1482 sset_destroy(&devnames
);
1485 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
1486 * pointer if the netdev cannot be opened. On success, also fills in
1488 static struct netdev
*
1489 ofport_open(const struct ofproto
*ofproto
,
1490 const struct ofproto_port
*ofproto_port
,
1491 struct ofputil_phy_port
*pp
)
1493 enum netdev_flags flags
;
1494 struct netdev
*netdev
;
1497 error
= netdev_open(ofproto_port
->name
, ofproto_port
->type
, &netdev
);
1499 VLOG_WARN_RL(&rl
, "%s: ignoring port %s (%"PRIu16
") because netdev %s "
1500 "cannot be opened (%s)",
1502 ofproto_port
->name
, ofproto_port
->ofp_port
,
1503 ofproto_port
->name
, strerror(error
));
1507 pp
->port_no
= ofproto_port
->ofp_port
;
1508 netdev_get_etheraddr(netdev
, pp
->hw_addr
);
1509 ovs_strlcpy(pp
->name
, ofproto_port
->name
, sizeof pp
->name
);
1510 netdev_get_flags(netdev
, &flags
);
1511 pp
->config
= flags
& NETDEV_UP
? 0 : OFPUTIL_PC_PORT_DOWN
;
1512 pp
->state
= netdev_get_carrier(netdev
) ? 0 : OFPUTIL_PS_LINK_DOWN
;
1513 netdev_get_features(netdev
, &pp
->curr
, &pp
->advertised
,
1514 &pp
->supported
, &pp
->peer
);
1515 pp
->curr_speed
= netdev_features_to_bps(pp
->curr
);
1516 pp
->max_speed
= netdev_features_to_bps(pp
->supported
);
1521 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
1522 * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are
1525 ofport_equal(const struct ofputil_phy_port
*a
,
1526 const struct ofputil_phy_port
*b
)
1528 return (eth_addr_equals(a
->hw_addr
, b
->hw_addr
)
1529 && a
->state
== b
->state
1530 && !((a
->config
^ b
->config
) & OFPUTIL_PC_PORT_DOWN
)
1531 && a
->curr
== b
->curr
1532 && a
->advertised
== b
->advertised
1533 && a
->supported
== b
->supported
1534 && a
->peer
== b
->peer
1535 && a
->curr_speed
== b
->curr_speed
1536 && a
->max_speed
== b
->max_speed
);
1539 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
1540 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
1541 * one with the same name or port number). */
1543 ofport_install(struct ofproto
*p
,
1544 struct netdev
*netdev
, const struct ofputil_phy_port
*pp
)
1546 const char *netdev_name
= netdev_get_name(netdev
);
1547 struct ofport
*ofport
;
1550 /* Create ofport. */
1551 ofport
= p
->ofproto_class
->port_alloc();
1556 ofport
->ofproto
= p
;
1557 ofport
->netdev
= netdev
;
1558 ofport
->change_seq
= netdev_change_seq(netdev
);
1560 ofport
->ofp_port
= pp
->port_no
;
1562 /* Add port to 'p'. */
1563 hmap_insert(&p
->ports
, &ofport
->hmap_node
, hash_int(ofport
->ofp_port
, 0));
1564 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1566 update_mtu(p
, ofport
);
1568 /* Let the ofproto_class initialize its private data. */
1569 error
= p
->ofproto_class
->port_construct(ofport
);
1573 connmgr_send_port_status(p
->connmgr
, pp
, OFPPR_ADD
);
1577 VLOG_WARN_RL(&rl
, "%s: could not add port %s (%s)",
1578 p
->name
, netdev_name
, strerror(error
));
1580 ofport_destroy__(ofport
);
1582 netdev_close(netdev
);
1586 /* Removes 'ofport' from 'p' and destroys it. */
1588 ofport_remove(struct ofport
*ofport
)
1590 connmgr_send_port_status(ofport
->ofproto
->connmgr
, &ofport
->pp
,
1592 ofport_destroy(ofport
);
1595 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
1598 ofport_remove_with_name(struct ofproto
*ofproto
, const char *name
)
1600 struct ofport
*port
= shash_find_data(&ofproto
->port_by_name
, name
);
1602 ofport_remove(port
);
1606 /* Updates 'port' with new 'pp' description.
1608 * Does not handle a name or port number change. The caller must implement
1609 * such a change as a delete followed by an add. */
1611 ofport_modified(struct ofport
*port
, struct ofputil_phy_port
*pp
)
1613 memcpy(port
->pp
.hw_addr
, pp
->hw_addr
, ETH_ADDR_LEN
);
1614 port
->pp
.config
= ((port
->pp
.config
& ~OFPUTIL_PC_PORT_DOWN
)
1615 | (pp
->config
& OFPUTIL_PC_PORT_DOWN
));
1616 port
->pp
.state
= pp
->state
;
1617 port
->pp
.curr
= pp
->curr
;
1618 port
->pp
.advertised
= pp
->advertised
;
1619 port
->pp
.supported
= pp
->supported
;
1620 port
->pp
.peer
= pp
->peer
;
1621 port
->pp
.curr_speed
= pp
->curr_speed
;
1622 port
->pp
.max_speed
= pp
->max_speed
;
1624 connmgr_send_port_status(port
->ofproto
->connmgr
, &port
->pp
, OFPPR_MODIFY
);
1627 /* Update OpenFlow 'state' in 'port' and notify controller. */
1629 ofproto_port_set_state(struct ofport
*port
, enum ofputil_port_state state
)
1631 if (port
->pp
.state
!= state
) {
1632 port
->pp
.state
= state
;
1633 connmgr_send_port_status(port
->ofproto
->connmgr
, &port
->pp
,
1639 ofproto_port_unregister(struct ofproto
*ofproto
, uint16_t ofp_port
)
1641 struct ofport
*port
= ofproto_get_port(ofproto
, ofp_port
);
1643 if (port
->ofproto
->ofproto_class
->set_realdev
) {
1644 port
->ofproto
->ofproto_class
->set_realdev(port
, 0, 0);
1646 if (port
->ofproto
->ofproto_class
->set_stp_port
) {
1647 port
->ofproto
->ofproto_class
->set_stp_port(port
, NULL
);
1649 if (port
->ofproto
->ofproto_class
->set_cfm
) {
1650 port
->ofproto
->ofproto_class
->set_cfm(port
, NULL
);
1652 if (port
->ofproto
->ofproto_class
->bundle_remove
) {
1653 port
->ofproto
->ofproto_class
->bundle_remove(port
);
1659 ofport_destroy__(struct ofport
*port
)
1661 struct ofproto
*ofproto
= port
->ofproto
;
1662 const char *name
= netdev_get_name(port
->netdev
);
1664 hmap_remove(&ofproto
->ports
, &port
->hmap_node
);
1665 shash_delete(&ofproto
->port_by_name
,
1666 shash_find(&ofproto
->port_by_name
, name
));
1668 netdev_close(port
->netdev
);
1669 ofproto
->ofproto_class
->port_dealloc(port
);
1673 ofport_destroy(struct ofport
*port
)
1676 port
->ofproto
->ofproto_class
->port_destruct(port
);
1677 ofport_destroy__(port
);
1682 ofproto_get_port(const struct ofproto
*ofproto
, uint16_t ofp_port
)
1684 struct ofport
*port
;
1686 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
,
1687 hash_int(ofp_port
, 0), &ofproto
->ports
) {
1688 if (port
->ofp_port
== ofp_port
) {
1696 ofproto_port_get_stats(const struct ofport
*port
, struct netdev_stats
*stats
)
1698 struct ofproto
*ofproto
= port
->ofproto
;
1701 if (ofproto
->ofproto_class
->port_get_stats
) {
1702 error
= ofproto
->ofproto_class
->port_get_stats(port
, stats
);
1711 update_port(struct ofproto
*ofproto
, const char *name
)
1713 struct ofproto_port ofproto_port
;
1714 struct ofputil_phy_port pp
;
1715 struct netdev
*netdev
;
1716 struct ofport
*port
;
1718 COVERAGE_INC(ofproto_update_port
);
1720 /* Fetch 'name''s location and properties from the datapath. */
1721 netdev
= (!ofproto_port_query_by_name(ofproto
, name
, &ofproto_port
)
1722 ? ofport_open(ofproto
, &ofproto_port
, &pp
)
1725 port
= ofproto_get_port(ofproto
, ofproto_port
.ofp_port
);
1726 if (port
&& !strcmp(netdev_get_name(port
->netdev
), name
)) {
1727 struct netdev
*old_netdev
= port
->netdev
;
1729 /* 'name' hasn't changed location. Any properties changed? */
1730 if (!ofport_equal(&port
->pp
, &pp
)) {
1731 ofport_modified(port
, &pp
);
1734 update_mtu(ofproto
, port
);
1736 /* Install the newly opened netdev in case it has changed.
1737 * Don't close the old netdev yet in case port_modified has to
1738 * remove a retained reference to it.*/
1739 port
->netdev
= netdev
;
1740 port
->change_seq
= netdev_change_seq(netdev
);
1742 if (port
->ofproto
->ofproto_class
->port_modified
) {
1743 port
->ofproto
->ofproto_class
->port_modified(port
);
1746 netdev_close(old_netdev
);
1748 /* If 'port' is nonnull then its name differs from 'name' and thus
1749 * we should delete it. If we think there's a port named 'name'
1750 * then its port number must be wrong now so delete it too. */
1752 ofport_remove(port
);
1754 ofport_remove_with_name(ofproto
, name
);
1755 ofport_install(ofproto
, netdev
, &pp
);
1758 /* Any port named 'name' is gone now. */
1759 ofport_remove_with_name(ofproto
, name
);
1761 ofproto_port_destroy(&ofproto_port
);
1765 init_ports(struct ofproto
*p
)
1767 struct ofproto_port_dump dump
;
1768 struct ofproto_port ofproto_port
;
1770 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
1771 uint16_t ofp_port
= ofproto_port
.ofp_port
;
1772 if (ofproto_get_port(p
, ofp_port
)) {
1773 VLOG_WARN_RL(&rl
, "%s: ignoring duplicate port %"PRIu16
" "
1774 "in datapath", p
->name
, ofp_port
);
1775 } else if (shash_find(&p
->port_by_name
, ofproto_port
.name
)) {
1776 VLOG_WARN_RL(&rl
, "%s: ignoring duplicate device %s in datapath",
1777 p
->name
, ofproto_port
.name
);
1779 struct ofputil_phy_port pp
;
1780 struct netdev
*netdev
;
1782 netdev
= ofport_open(p
, &ofproto_port
, &pp
);
1784 ofport_install(p
, netdev
, &pp
);
1792 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
1793 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
1795 find_min_mtu(struct ofproto
*p
)
1797 struct ofport
*ofport
;
1800 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1801 struct netdev
*netdev
= ofport
->netdev
;
1804 /* Skip any internal ports, since that's what we're trying to
1806 if (!strcmp(netdev_get_type(netdev
), "internal")) {
1810 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
1813 if (!mtu
|| dev_mtu
< mtu
) {
1818 return mtu
? mtu
: ETH_PAYLOAD_MAX
;
1821 /* Update MTU of all datapath devices on 'p' to the minimum of the
1822 * non-datapath ports in event of 'port' added or changed. */
1824 update_mtu(struct ofproto
*p
, struct ofport
*port
)
1826 struct ofport
*ofport
;
1827 struct netdev
*netdev
= port
->netdev
;
1828 int dev_mtu
, old_min
;
1830 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
1834 if (!strcmp(netdev_get_type(port
->netdev
), "internal")) {
1835 if (dev_mtu
> p
->min_mtu
) {
1836 if (!netdev_set_mtu(port
->netdev
, p
->min_mtu
)) {
1837 dev_mtu
= p
->min_mtu
;
1840 port
->mtu
= dev_mtu
;
1844 /* For non-internal port find new min mtu. */
1845 old_min
= p
->min_mtu
;
1846 port
->mtu
= dev_mtu
;
1847 p
->min_mtu
= find_min_mtu(p
);
1848 if (p
->min_mtu
== old_min
) {
1852 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1853 struct netdev
*netdev
= ofport
->netdev
;
1855 if (!strcmp(netdev_get_type(netdev
), "internal")) {
1856 if (!netdev_set_mtu(netdev
, p
->min_mtu
)) {
1857 ofport
->mtu
= p
->min_mtu
;
1864 ofproto_rule_destroy__(struct rule
*rule
)
1867 free(rule
->ofpacts
);
1868 rule
->ofproto
->ofproto_class
->rule_dealloc(rule
);
1872 /* This function allows an ofproto implementation to destroy any rules that
1873 * remain when its ->destruct() function is called. The caller must have
1874 * already uninitialized any derived members of 'rule' (step 5 described in the
1875 * large comment in ofproto/ofproto-provider.h titled "Life Cycle").
1876 * This function implements steps 6 and 7.
1878 * This function should only be called from an ofproto implementation's
1879 * ->destruct() function. It is not suitable elsewhere. */
1881 ofproto_rule_destroy(struct rule
*rule
)
1883 assert(!rule
->pending
);
1884 oftable_remove_rule(rule
);
1885 ofproto_rule_destroy__(rule
);
1888 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
1889 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
1891 rule_has_out_port(const struct rule
*rule
, uint16_t port
)
1893 return (port
== OFPP_NONE
1894 || ofpacts_output_to_port(rule
->ofpacts
, rule
->ofpacts_len
, port
));
1897 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
1898 * statistics appropriately. 'packet' must have at least sizeof(struct
1899 * ofp_packet_in) bytes of headroom.
1901 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
1902 * with statistics for 'packet' either way.
1904 * Takes ownership of 'packet'. */
1906 rule_execute(struct rule
*rule
, uint16_t in_port
, struct ofpbuf
*packet
)
1910 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
1912 flow_extract(packet
, 0, 0, in_port
, &flow
);
1913 return rule
->ofproto
->ofproto_class
->rule_execute(rule
, &flow
, packet
);
1916 /* Returns true if 'rule' should be hidden from the controller.
1918 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
1919 * (e.g. by in-band control) and are intentionally hidden from the
1922 rule_is_hidden(const struct rule
*rule
)
1924 return rule
->cr
.priority
> UINT16_MAX
;
1927 static enum oftable_flags
1928 rule_get_flags(const struct rule
*rule
)
1930 return rule
->ofproto
->tables
[rule
->table_id
].flags
;
1934 rule_is_modifiable(const struct rule
*rule
)
1936 return !(rule_get_flags(rule
) & OFTABLE_READONLY
);
1940 handle_echo_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
1942 ofconn_send_reply(ofconn
, make_echo_reply(oh
));
1947 handle_features_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
1949 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
1950 struct ofputil_switch_features features
;
1951 struct ofport
*port
;
1955 ofproto
->ofproto_class
->get_features(ofproto
, &arp_match_ip
,
1957 assert(features
.actions
& OFPUTIL_A_OUTPUT
); /* sanity check */
1959 features
.datapath_id
= ofproto
->datapath_id
;
1960 features
.n_buffers
= pktbuf_capacity();
1961 features
.n_tables
= ofproto
->n_tables
;
1962 features
.capabilities
= (OFPUTIL_C_FLOW_STATS
| OFPUTIL_C_TABLE_STATS
|
1963 OFPUTIL_C_PORT_STATS
| OFPUTIL_C_QUEUE_STATS
);
1965 features
.capabilities
|= OFPUTIL_C_ARP_MATCH_IP
;
1968 b
= ofputil_encode_switch_features(&features
, ofconn_get_protocol(ofconn
),
1970 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
1971 ofputil_put_switch_features_port(&port
->pp
, b
);
1974 ofconn_send_reply(ofconn
, b
);
1979 handle_get_config_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
1981 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
1982 struct ofp_switch_config
*osc
;
1983 enum ofp_config_flags flags
;
1987 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
1988 flags
= ofproto
->frag_handling
;
1989 if (ofconn_get_invalid_ttl_to_controller(ofconn
)) {
1990 flags
|= OFPC_INVALID_TTL_TO_CONTROLLER
;
1992 osc
->flags
= htons(flags
);
1993 osc
->miss_send_len
= htons(ofconn_get_miss_send_len(ofconn
));
1994 ofconn_send_reply(ofconn
, buf
);
2000 handle_set_config(struct ofconn
*ofconn
, const struct ofp_switch_config
*osc
)
2002 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2003 uint16_t flags
= ntohs(osc
->flags
);
2005 if (ofconn_get_type(ofconn
) != OFCONN_PRIMARY
2006 || ofconn_get_role(ofconn
) != NX_ROLE_SLAVE
) {
2007 enum ofp_config_flags cur
= ofproto
->frag_handling
;
2008 enum ofp_config_flags next
= flags
& OFPC_FRAG_MASK
;
2010 assert((cur
& OFPC_FRAG_MASK
) == cur
);
2012 if (ofproto
->ofproto_class
->set_frag_handling(ofproto
, next
)) {
2013 ofproto
->frag_handling
= next
;
2015 VLOG_WARN_RL(&rl
, "%s: unsupported fragment handling mode %s",
2017 ofputil_frag_handling_to_string(next
));
2021 ofconn_set_invalid_ttl_to_controller(ofconn
,
2022 (flags
& OFPC_INVALID_TTL_TO_CONTROLLER
));
2024 ofconn_set_miss_send_len(ofconn
, ntohs(osc
->miss_send_len
));
2029 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2030 * error message code for the caller to propagate upward. Otherwise, returns
2033 * The log message mentions 'msg_type'. */
2035 reject_slave_controller(struct ofconn
*ofconn
)
2037 if (ofconn_get_type(ofconn
) == OFCONN_PRIMARY
2038 && ofconn_get_role(ofconn
) == NX_ROLE_SLAVE
) {
2039 return OFPERR_OFPBRC_EPERM
;
2046 handle_packet_out(struct ofconn
*ofconn
, const struct ofp_packet_out
*opo
)
2048 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2049 struct ofputil_packet_out po
;
2050 struct ofpbuf
*payload
;
2051 uint64_t ofpacts_stub
[1024 / 8];
2052 struct ofpbuf ofpacts
;
2056 COVERAGE_INC(ofproto_packet_out
);
2058 error
= reject_slave_controller(ofconn
);
2063 /* Decode message. */
2064 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
2065 error
= ofputil_decode_packet_out(&po
, opo
, &ofpacts
);
2067 goto exit_free_ofpacts
;
2071 if (po
.buffer_id
!= UINT32_MAX
) {
2072 error
= ofconn_pktbuf_retrieve(ofconn
, po
.buffer_id
, &payload
, NULL
);
2073 if (error
|| !payload
) {
2074 goto exit_free_ofpacts
;
2077 payload
= xmalloc(sizeof *payload
);
2078 ofpbuf_use_const(payload
, po
.packet
, po
.packet_len
);
2081 /* Send out packet. */
2082 flow_extract(payload
, 0, 0, po
.in_port
, &flow
);
2083 error
= p
->ofproto_class
->packet_out(p
, payload
, &flow
,
2084 po
.ofpacts
, po
.ofpacts_len
);
2085 ofpbuf_delete(payload
);
2088 ofpbuf_uninit(&ofpacts
);
2094 update_port_config(struct ofport
*port
,
2095 enum ofputil_port_config config
,
2096 enum ofputil_port_config mask
)
2098 enum ofputil_port_config old_config
= port
->pp
.config
;
2099 enum ofputil_port_config toggle
;
2101 toggle
= (config
^ port
->pp
.config
) & mask
;
2102 if (toggle
& OFPUTIL_PC_PORT_DOWN
) {
2103 if (config
& OFPUTIL_PC_PORT_DOWN
) {
2104 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2106 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2108 toggle
&= ~OFPUTIL_PC_PORT_DOWN
;
2111 port
->pp
.config
^= toggle
;
2112 if (port
->pp
.config
!= old_config
) {
2113 port
->ofproto
->ofproto_class
->port_reconfigured(port
, old_config
);
2118 handle_port_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2120 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2121 struct ofputil_port_mod pm
;
2122 struct ofport
*port
;
2125 error
= reject_slave_controller(ofconn
);
2130 error
= ofputil_decode_port_mod(oh
, &pm
);
2135 port
= ofproto_get_port(p
, pm
.port_no
);
2137 return OFPERR_OFPPMFC_BAD_PORT
;
2138 } else if (!eth_addr_equals(port
->pp
.hw_addr
, pm
.hw_addr
)) {
2139 return OFPERR_OFPPMFC_BAD_HW_ADDR
;
2141 update_port_config(port
, pm
.config
, pm
.mask
);
2143 netdev_set_advertisements(port
->netdev
, pm
.advertise
);
2150 handle_desc_stats_request(struct ofconn
*ofconn
,
2151 const struct ofp_stats_msg
*request
)
2153 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2154 struct ofp_desc_stats
*ods
;
2157 ods
= ofputil_make_stats_reply(sizeof *ods
, request
, &msg
);
2158 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
2159 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
2160 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
2161 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
2162 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
2163 ofconn_send_reply(ofconn
, msg
);
2169 handle_table_stats_request(struct ofconn
*ofconn
,
2170 const struct ofp_stats_msg
*request
)
2172 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2173 struct ofp_table_stats
*ots
;
2177 ofputil_make_stats_reply(sizeof(struct ofp_stats_msg
), request
, &msg
);
2179 ots
= ofpbuf_put_zeros(msg
, sizeof *ots
* p
->n_tables
);
2180 for (i
= 0; i
< p
->n_tables
; i
++) {
2181 ots
[i
].table_id
= i
;
2182 sprintf(ots
[i
].name
, "table%zu", i
);
2183 ots
[i
].wildcards
= htonl(OFPFW10_ALL
);
2184 ots
[i
].max_entries
= htonl(1000000); /* An arbitrary big number. */
2185 ots
[i
].active_count
= htonl(classifier_count(&p
->tables
[i
].cls
));
2188 p
->ofproto_class
->get_tables(p
, ots
);
2190 for (i
= 0; i
< p
->n_tables
; i
++) {
2191 const struct oftable
*table
= &p
->tables
[i
];
2194 ovs_strzcpy(ots
[i
].name
, table
->name
, sizeof ots
[i
].name
);
2197 if (table
->max_flows
< ntohl(ots
[i
].max_entries
)) {
2198 ots
[i
].max_entries
= htonl(table
->max_flows
);
2202 ofconn_send_reply(ofconn
, msg
);
2207 append_port_stat(struct ofport
*port
, struct list
*replies
)
2209 struct netdev_stats stats
;
2210 struct ofp_port_stats
*ops
;
2212 /* Intentionally ignore return value, since errors will set
2213 * 'stats' to all-1s, which is correct for OpenFlow, and
2214 * netdev_get_stats() will log errors. */
2215 ofproto_port_get_stats(port
, &stats
);
2217 ops
= ofputil_append_stats_reply(sizeof *ops
, replies
);
2218 ops
->port_no
= htons(port
->pp
.port_no
);
2219 memset(ops
->pad
, 0, sizeof ops
->pad
);
2220 put_32aligned_be64(&ops
->rx_packets
, htonll(stats
.rx_packets
));
2221 put_32aligned_be64(&ops
->tx_packets
, htonll(stats
.tx_packets
));
2222 put_32aligned_be64(&ops
->rx_bytes
, htonll(stats
.rx_bytes
));
2223 put_32aligned_be64(&ops
->tx_bytes
, htonll(stats
.tx_bytes
));
2224 put_32aligned_be64(&ops
->rx_dropped
, htonll(stats
.rx_dropped
));
2225 put_32aligned_be64(&ops
->tx_dropped
, htonll(stats
.tx_dropped
));
2226 put_32aligned_be64(&ops
->rx_errors
, htonll(stats
.rx_errors
));
2227 put_32aligned_be64(&ops
->tx_errors
, htonll(stats
.tx_errors
));
2228 put_32aligned_be64(&ops
->rx_frame_err
, htonll(stats
.rx_frame_errors
));
2229 put_32aligned_be64(&ops
->rx_over_err
, htonll(stats
.rx_over_errors
));
2230 put_32aligned_be64(&ops
->rx_crc_err
, htonll(stats
.rx_crc_errors
));
2231 put_32aligned_be64(&ops
->collisions
, htonll(stats
.collisions
));
2235 handle_port_stats_request(struct ofconn
*ofconn
,
2236 const struct ofp_port_stats_request
*psr
)
2238 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2239 struct ofport
*port
;
2240 struct list replies
;
2242 ofputil_start_stats_reply(&psr
->osm
, &replies
);
2243 if (psr
->port_no
!= htons(OFPP_NONE
)) {
2244 port
= ofproto_get_port(p
, ntohs(psr
->port_no
));
2246 append_port_stat(port
, &replies
);
2249 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2250 append_port_stat(port
, &replies
);
2254 ofconn_send_replies(ofconn
, &replies
);
2259 handle_port_desc_stats_request(struct ofconn
*ofconn
,
2260 const struct ofp_stats_msg
*osm
)
2262 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2263 struct ofport
*port
;
2264 struct list replies
;
2266 ofputil_start_stats_reply(osm
, &replies
);
2268 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2269 ofputil_append_port_desc_stats_reply(ofconn_get_protocol(ofconn
),
2270 &port
->pp
, &replies
);
2273 ofconn_send_replies(ofconn
, &replies
);
2278 calc_flow_duration__(long long int start
, long long int now
,
2279 uint32_t *sec
, uint32_t *nsec
)
2281 long long int msecs
= now
- start
;
2282 *sec
= msecs
/ 1000;
2283 *nsec
= (msecs
% 1000) * (1000 * 1000);
2286 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
2287 * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */
2289 check_table_id(const struct ofproto
*ofproto
, uint8_t table_id
)
2291 return (table_id
== 0xff || table_id
< ofproto
->n_tables
2293 : OFPERR_NXBRC_BAD_TABLE_ID
);
2297 static struct oftable
*
2298 next_visible_table(struct ofproto
*ofproto
, uint8_t table_id
)
2300 struct oftable
*table
;
2302 for (table
= &ofproto
->tables
[table_id
];
2303 table
< &ofproto
->tables
[ofproto
->n_tables
];
2305 if (!(table
->flags
& OFTABLE_HIDDEN
)) {
2313 static struct oftable
*
2314 first_matching_table(struct ofproto
*ofproto
, uint8_t table_id
)
2316 if (table_id
== 0xff) {
2317 return next_visible_table(ofproto
, 0);
2318 } else if (table_id
< ofproto
->n_tables
) {
2319 return &ofproto
->tables
[table_id
];
2325 static struct oftable
*
2326 next_matching_table(struct ofproto
*ofproto
,
2327 struct oftable
*table
, uint8_t table_id
)
2329 return (table_id
== 0xff
2330 ? next_visible_table(ofproto
, (table
- ofproto
->tables
) + 1)
2334 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
2336 * - If TABLE_ID is 0xff, this iterates over every classifier table in
2337 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
2339 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
2340 * only once, for that table. (This can be used to access tables marked
2343 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
2344 * entered at all. (Perhaps you should have validated TABLE_ID with
2345 * check_table_id().)
2347 * All parameters are evaluated multiple times.
2349 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
2350 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
2352 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
2354 /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
2355 * 'table_id' is 0xff) that match 'match' in the "loose" way required for
2356 * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list
2359 * If 'out_port' is anything other than OFPP_NONE, then only rules that output
2360 * to 'out_port' are included.
2362 * Hidden rules are always omitted.
2364 * Returns 0 on success, otherwise an OpenFlow error code. */
2366 collect_rules_loose(struct ofproto
*ofproto
, uint8_t table_id
,
2367 const struct cls_rule
*match
,
2368 ovs_be64 cookie
, ovs_be64 cookie_mask
,
2369 uint16_t out_port
, struct list
*rules
)
2371 struct oftable
*table
;
2374 error
= check_table_id(ofproto
, table_id
);
2380 FOR_EACH_MATCHING_TABLE (table
, table_id
, ofproto
) {
2381 struct cls_cursor cursor
;
2384 cls_cursor_init(&cursor
, &table
->cls
, match
);
2385 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
2386 if (rule
->pending
) {
2387 return OFPROTO_POSTPONE
;
2389 if (!rule_is_hidden(rule
) && rule_has_out_port(rule
, out_port
)
2390 && !((rule
->flow_cookie
^ cookie
) & cookie_mask
)) {
2391 list_push_back(rules
, &rule
->ofproto_node
);
2398 /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
2399 * 'table_id' is 0xff) that match 'match' in the "strict" way required for
2400 * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them
2403 * If 'out_port' is anything other than OFPP_NONE, then only rules that output
2404 * to 'out_port' are included.
2406 * Hidden rules are always omitted.
2408 * Returns 0 on success, otherwise an OpenFlow error code. */
2410 collect_rules_strict(struct ofproto
*ofproto
, uint8_t table_id
,
2411 const struct cls_rule
*match
,
2412 ovs_be64 cookie
, ovs_be64 cookie_mask
,
2413 uint16_t out_port
, struct list
*rules
)
2415 struct oftable
*table
;
2418 error
= check_table_id(ofproto
, table_id
);
2424 FOR_EACH_MATCHING_TABLE (table
, table_id
, ofproto
) {
2427 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&table
->cls
,
2430 if (rule
->pending
) {
2431 return OFPROTO_POSTPONE
;
2433 if (!rule_is_hidden(rule
) && rule_has_out_port(rule
, out_port
)
2434 && !((rule
->flow_cookie
^ cookie
) & cookie_mask
)) {
2435 list_push_back(rules
, &rule
->ofproto_node
);
2442 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
2443 * forced into the range of a uint16_t. */
2445 age_secs(long long int age_ms
)
2447 return (age_ms
< 0 ? 0
2448 : age_ms
>= UINT16_MAX
* 1000 ? UINT16_MAX
2449 : (unsigned int) age_ms
/ 1000);
2453 handle_flow_stats_request(struct ofconn
*ofconn
,
2454 const struct ofp_stats_msg
*osm
)
2456 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2457 struct ofputil_flow_stats_request fsr
;
2458 struct list replies
;
2463 error
= ofputil_decode_flow_stats_request(&fsr
, &osm
->header
);
2468 error
= collect_rules_loose(ofproto
, fsr
.table_id
, &fsr
.match
,
2469 fsr
.cookie
, fsr
.cookie_mask
,
2470 fsr
.out_port
, &rules
);
2475 ofputil_start_stats_reply(osm
, &replies
);
2476 LIST_FOR_EACH (rule
, ofproto_node
, &rules
) {
2477 long long int now
= time_msec();
2478 struct ofputil_flow_stats fs
;
2481 fs
.cookie
= rule
->flow_cookie
;
2482 fs
.table_id
= rule
->table_id
;
2483 calc_flow_duration__(rule
->created
, now
, &fs
.duration_sec
,
2485 fs
.idle_timeout
= rule
->idle_timeout
;
2486 fs
.hard_timeout
= rule
->hard_timeout
;
2487 fs
.idle_age
= age_secs(now
- rule
->used
);
2488 fs
.hard_age
= age_secs(now
- rule
->modified
);
2489 ofproto
->ofproto_class
->rule_get_stats(rule
, &fs
.packet_count
,
2491 fs
.ofpacts
= rule
->ofpacts
;
2492 fs
.ofpacts_len
= rule
->ofpacts_len
;
2493 ofputil_append_flow_stats_reply(&fs
, &replies
);
2495 ofconn_send_replies(ofconn
, &replies
);
2501 flow_stats_ds(struct rule
*rule
, struct ds
*results
)
2503 uint64_t packet_count
, byte_count
;
2505 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
,
2506 &packet_count
, &byte_count
);
2508 if (rule
->table_id
!= 0) {
2509 ds_put_format(results
, "table_id=%"PRIu8
", ", rule
->table_id
);
2511 ds_put_format(results
, "duration=%llds, ",
2512 (time_msec() - rule
->created
) / 1000);
2513 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2514 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2515 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2516 cls_rule_format(&rule
->cr
, results
);
2517 ds_put_char(results
, ',');
2518 if (rule
->ofpacts_len
> 0) {
2519 ofpacts_format(rule
->ofpacts
, rule
->ofpacts_len
, results
);
2521 ds_put_cstr(results
, "drop");
2523 ds_put_cstr(results
, "\n");
2526 /* Adds a pretty-printed description of all flows to 'results', including
2527 * hidden flows (e.g., set up by in-band control). */
2529 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
2531 struct oftable
*table
;
2533 OFPROTO_FOR_EACH_TABLE (table
, p
) {
2534 struct cls_cursor cursor
;
2537 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
2538 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
2539 flow_stats_ds(rule
, results
);
2544 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
2545 * '*engine_type' and '*engine_id', respectively. */
2547 ofproto_get_netflow_ids(const struct ofproto
*ofproto
,
2548 uint8_t *engine_type
, uint8_t *engine_id
)
2550 ofproto
->ofproto_class
->get_netflow_ids(ofproto
, engine_type
, engine_id
);
2553 /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns a
2554 * bitmask of 'cfm_fault_reason's to indicate a CFM fault (generally
2555 * indicating a connectivity problem). Returns zero if CFM is not faulted,
2556 * and -1 if CFM is not enabled on 'port'. */
2558 ofproto_port_get_cfm_fault(const struct ofproto
*ofproto
, uint16_t ofp_port
)
2560 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
2561 return (ofport
&& ofproto
->ofproto_class
->get_cfm_fault
2562 ? ofproto
->ofproto_class
->get_cfm_fault(ofport
)
2566 /* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port'
2567 * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by
2568 * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a
2569 * number less than 0 if CFM is not enabled on 'ofp_port'. */
2571 ofproto_port_get_cfm_remote_mpids(const struct ofproto
*ofproto
,
2572 uint16_t ofp_port
, const uint64_t **rmps
,
2575 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
2579 return (ofport
&& ofproto
->ofproto_class
->get_cfm_remote_mpids
2580 ? ofproto
->ofproto_class
->get_cfm_remote_mpids(ofport
, rmps
,
2585 /* Checks the health of the CFM for 'ofp_port' within 'ofproto'. Returns an
2586 * integer value between 0 and 100 to indicate the health of the port as a
2587 * percentage which is the average of cfm health of all the remote_mpids or
2588 * returns -1 if CFM is not enabled on 'ofport'. */
2590 ofproto_port_get_cfm_health(const struct ofproto
*ofproto
, uint16_t ofp_port
)
2592 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
2593 return (ofport
&& ofproto
->ofproto_class
->get_cfm_health
2594 ? ofproto
->ofproto_class
->get_cfm_health(ofport
)
2599 handle_aggregate_stats_request(struct ofconn
*ofconn
,
2600 const struct ofp_stats_msg
*osm
)
2602 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2603 struct ofputil_flow_stats_request request
;
2604 struct ofputil_aggregate_stats stats
;
2605 bool unknown_packets
, unknown_bytes
;
2606 struct ofpbuf
*reply
;
2611 error
= ofputil_decode_flow_stats_request(&request
, &osm
->header
);
2616 error
= collect_rules_loose(ofproto
, request
.table_id
, &request
.match
,
2617 request
.cookie
, request
.cookie_mask
,
2618 request
.out_port
, &rules
);
2623 memset(&stats
, 0, sizeof stats
);
2624 unknown_packets
= unknown_bytes
= false;
2625 LIST_FOR_EACH (rule
, ofproto_node
, &rules
) {
2626 uint64_t packet_count
;
2627 uint64_t byte_count
;
2629 ofproto
->ofproto_class
->rule_get_stats(rule
, &packet_count
,
2632 if (packet_count
== UINT64_MAX
) {
2633 unknown_packets
= true;
2635 stats
.packet_count
+= packet_count
;
2638 if (byte_count
== UINT64_MAX
) {
2639 unknown_bytes
= true;
2641 stats
.byte_count
+= byte_count
;
2646 if (unknown_packets
) {
2647 stats
.packet_count
= UINT64_MAX
;
2649 if (unknown_bytes
) {
2650 stats
.byte_count
= UINT64_MAX
;
2653 reply
= ofputil_encode_aggregate_stats_reply(&stats
, osm
);
2654 ofconn_send_reply(ofconn
, reply
);
2659 struct queue_stats_cbdata
{
2660 struct ofport
*ofport
;
2661 struct list replies
;
2665 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
2666 const struct netdev_queue_stats
*stats
)
2668 struct ofp_queue_stats
*reply
;
2670 reply
= ofputil_append_stats_reply(sizeof *reply
, &cbdata
->replies
);
2671 reply
->port_no
= htons(cbdata
->ofport
->pp
.port_no
);
2672 memset(reply
->pad
, 0, sizeof reply
->pad
);
2673 reply
->queue_id
= htonl(queue_id
);
2674 put_32aligned_be64(&reply
->tx_bytes
, htonll(stats
->tx_bytes
));
2675 put_32aligned_be64(&reply
->tx_packets
, htonll(stats
->tx_packets
));
2676 put_32aligned_be64(&reply
->tx_errors
, htonll(stats
->tx_errors
));
2680 handle_queue_stats_dump_cb(uint32_t queue_id
,
2681 struct netdev_queue_stats
*stats
,
2684 struct queue_stats_cbdata
*cbdata
= cbdata_
;
2686 put_queue_stats(cbdata
, queue_id
, stats
);
2690 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
2691 struct queue_stats_cbdata
*cbdata
)
2693 cbdata
->ofport
= port
;
2694 if (queue_id
== OFPQ_ALL
) {
2695 netdev_dump_queue_stats(port
->netdev
,
2696 handle_queue_stats_dump_cb
, cbdata
);
2698 struct netdev_queue_stats stats
;
2700 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
2701 put_queue_stats(cbdata
, queue_id
, &stats
);
2703 return OFPERR_OFPQOFC_BAD_QUEUE
;
2710 handle_queue_stats_request(struct ofconn
*ofconn
,
2711 const struct ofp_queue_stats_request
*qsr
)
2713 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2714 struct queue_stats_cbdata cbdata
;
2715 unsigned int port_no
;
2716 struct ofport
*port
;
2720 COVERAGE_INC(ofproto_queue_req
);
2722 ofputil_start_stats_reply(&qsr
->osm
, &cbdata
.replies
);
2724 port_no
= ntohs(qsr
->port_no
);
2725 queue_id
= ntohl(qsr
->queue_id
);
2726 if (port_no
== OFPP_ALL
) {
2727 error
= OFPERR_OFPQOFC_BAD_QUEUE
;
2728 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
2729 if (!handle_queue_stats_for_port(port
, queue_id
, &cbdata
)) {
2734 port
= ofproto_get_port(ofproto
, port_no
);
2736 ? handle_queue_stats_for_port(port
, queue_id
, &cbdata
)
2737 : OFPERR_OFPQOFC_BAD_PORT
);
2740 ofconn_send_replies(ofconn
, &cbdata
.replies
);
2742 ofpbuf_list_delete(&cbdata
.replies
);
2749 is_flow_deletion_pending(const struct ofproto
*ofproto
,
2750 const struct cls_rule
*cls_rule
,
2753 if (!hmap_is_empty(&ofproto
->deletions
)) {
2754 struct ofoperation
*op
;
2756 HMAP_FOR_EACH_WITH_HASH (op
, hmap_node
,
2757 cls_rule_hash(cls_rule
, table_id
),
2758 &ofproto
->deletions
) {
2759 if (cls_rule_equal(cls_rule
, &op
->rule
->cr
)) {
2768 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
2769 * in which no matching flow already exists in the flow table.
2771 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
2772 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
2773 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
2774 * initiated now but may be retried later.
2776 * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
2777 * ownership remains with the caller.
2779 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
2782 add_flow(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
2783 const struct ofputil_flow_mod
*fm
, const struct ofp_header
*request
)
2785 struct oftable
*table
;
2786 struct ofopgroup
*group
;
2787 struct rule
*victim
;
2791 error
= check_table_id(ofproto
, fm
->table_id
);
2797 if (fm
->table_id
== 0xff) {
2799 if (ofproto
->ofproto_class
->rule_choose_table
) {
2800 error
= ofproto
->ofproto_class
->rule_choose_table(ofproto
, &fm
->cr
,
2805 assert(table_id
< ofproto
->n_tables
);
2806 table
= &ofproto
->tables
[table_id
];
2808 table
= &ofproto
->tables
[0];
2810 } else if (fm
->table_id
< ofproto
->n_tables
) {
2811 table
= &ofproto
->tables
[fm
->table_id
];
2813 return OFPERR_NXFMFC_BAD_TABLE_ID
;
2816 if (table
->flags
& OFTABLE_READONLY
) {
2817 return OFPERR_OFPBRC_EPERM
;
2820 /* Check for overlap, if requested. */
2821 if (fm
->flags
& OFPFF_CHECK_OVERLAP
2822 && classifier_rule_overlaps(&table
->cls
, &fm
->cr
)) {
2823 return OFPERR_OFPFMFC_OVERLAP
;
2826 /* Serialize against pending deletion. */
2827 if (is_flow_deletion_pending(ofproto
, &fm
->cr
, table
- ofproto
->tables
)) {
2828 return OFPROTO_POSTPONE
;
2831 /* Allocate new rule. */
2832 rule
= ofproto
->ofproto_class
->rule_alloc();
2834 VLOG_WARN_RL(&rl
, "%s: failed to create rule (%s)",
2835 ofproto
->name
, strerror(error
));
2838 rule
->ofproto
= ofproto
;
2840 rule
->pending
= NULL
;
2841 rule
->flow_cookie
= fm
->new_cookie
;
2842 rule
->created
= rule
->modified
= rule
->used
= time_msec();
2843 rule
->idle_timeout
= fm
->idle_timeout
;
2844 rule
->hard_timeout
= fm
->hard_timeout
;
2845 rule
->table_id
= table
- ofproto
->tables
;
2846 rule
->send_flow_removed
= (fm
->flags
& OFPFF_SEND_FLOW_REM
) != 0;
2847 rule
->ofpacts
= xmemdup(fm
->ofpacts
, fm
->ofpacts_len
);
2848 rule
->ofpacts_len
= fm
->ofpacts_len
;
2849 rule
->evictable
= true;
2850 rule
->eviction_group
= NULL
;
2852 /* Insert new rule. */
2853 victim
= oftable_replace_rule(rule
);
2854 if (victim
&& !rule_is_modifiable(victim
)) {
2855 error
= OFPERR_OFPBRC_EPERM
;
2856 } else if (victim
&& victim
->pending
) {
2857 error
= OFPROTO_POSTPONE
;
2861 if (classifier_count(&table
->cls
) > table
->max_flows
) {
2864 was_evictable
= rule
->evictable
;
2865 rule
->evictable
= false;
2866 evict
= choose_rule_to_evict(table
);
2867 rule
->evictable
= was_evictable
;
2870 error
= OFPERR_OFPFMFC_ALL_TABLES_FULL
;
2872 } else if (evict
->pending
) {
2873 error
= OFPROTO_POSTPONE
;
2880 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
2881 ofoperation_create(group
, rule
, OFOPERATION_ADD
);
2882 rule
->pending
->victim
= victim
;
2884 error
= ofproto
->ofproto_class
->rule_construct(rule
);
2886 ofoperation_destroy(rule
->pending
);
2888 delete_flow__(evict
, group
);
2890 ofopgroup_submit(group
);
2894 /* Back out if an error occurred. */
2896 oftable_substitute_rule(rule
, victim
);
2897 ofproto_rule_destroy__(rule
);
2902 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
2904 /* Modifies the rules listed in 'rules', changing their actions to match those
2907 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
2910 * Returns 0 on success, otherwise an OpenFlow error code. */
2912 modify_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
2913 const struct ofputil_flow_mod
*fm
,
2914 const struct ofp_header
*request
, struct list
*rules
)
2916 struct ofopgroup
*group
;
2920 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
2921 error
= OFPERR_OFPBRC_EPERM
;
2922 LIST_FOR_EACH (rule
, ofproto_node
, rules
) {
2923 if (rule_is_modifiable(rule
)) {
2924 /* At least one rule is modifiable, don't report EPERM error. */
2930 if (!ofpacts_equal(fm
->ofpacts
, fm
->ofpacts_len
,
2931 rule
->ofpacts
, rule
->ofpacts_len
)) {
2932 ofoperation_create(group
, rule
, OFOPERATION_MODIFY
);
2933 rule
->pending
->ofpacts
= rule
->ofpacts
;
2934 rule
->pending
->ofpacts_len
= rule
->ofpacts_len
;
2935 rule
->ofpacts
= xmemdup(fm
->ofpacts
, fm
->ofpacts_len
);
2936 rule
->ofpacts_len
= fm
->ofpacts_len
;
2937 rule
->ofproto
->ofproto_class
->rule_modify_actions(rule
);
2939 rule
->modified
= time_msec();
2941 if (fm
->new_cookie
!= htonll(UINT64_MAX
)) {
2942 rule
->flow_cookie
= fm
->new_cookie
;
2945 ofopgroup_submit(group
);
2950 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
2953 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
2956 modify_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
2957 const struct ofputil_flow_mod
*fm
,
2958 const struct ofp_header
*request
)
2963 error
= collect_rules_loose(ofproto
, fm
->table_id
, &fm
->cr
,
2964 fm
->cookie
, fm
->cookie_mask
,
2968 } else if (list_is_empty(&rules
)) {
2969 return fm
->cookie_mask
? 0 : add_flow(ofproto
, ofconn
, fm
, request
);
2971 return modify_flows__(ofproto
, ofconn
, fm
, request
, &rules
);
2975 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
2978 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
2981 modify_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
2982 const struct ofputil_flow_mod
*fm
,
2983 const struct ofp_header
*request
)
2988 error
= collect_rules_strict(ofproto
, fm
->table_id
, &fm
->cr
,
2989 fm
->cookie
, fm
->cookie_mask
,
2994 } else if (list_is_empty(&rules
)) {
2995 return fm
->cookie_mask
? 0 : add_flow(ofproto
, ofconn
, fm
, request
);
2997 return list_is_singleton(&rules
) ? modify_flows__(ofproto
, ofconn
,
2998 fm
, request
, &rules
)
3003 /* OFPFC_DELETE implementation. */
3006 delete_flow__(struct rule
*rule
, struct ofopgroup
*group
)
3008 struct ofproto
*ofproto
= rule
->ofproto
;
3010 ofproto_rule_send_removed(rule
, OFPRR_DELETE
);
3012 ofoperation_create(group
, rule
, OFOPERATION_DELETE
);
3013 oftable_remove_rule(rule
);
3014 ofproto
->ofproto_class
->rule_destruct(rule
);
3017 /* Deletes the rules listed in 'rules'.
3019 * Returns 0 on success, otherwise an OpenFlow error code. */
3021 delete_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3022 const struct ofp_header
*request
, struct list
*rules
)
3024 struct rule
*rule
, *next
;
3025 struct ofopgroup
*group
;
3027 group
= ofopgroup_create(ofproto
, ofconn
, request
, UINT32_MAX
);
3028 LIST_FOR_EACH_SAFE (rule
, next
, ofproto_node
, rules
) {
3029 delete_flow__(rule
, group
);
3031 ofopgroup_submit(group
);
3036 /* Implements OFPFC_DELETE. */
3038 delete_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3039 const struct ofputil_flow_mod
*fm
,
3040 const struct ofp_header
*request
)
3045 error
= collect_rules_loose(ofproto
, fm
->table_id
, &fm
->cr
,
3046 fm
->cookie
, fm
->cookie_mask
,
3047 fm
->out_port
, &rules
);
3048 return (error
? error
3049 : !list_is_empty(&rules
) ? delete_flows__(ofproto
, ofconn
, request
,
3054 /* Implements OFPFC_DELETE_STRICT. */
3056 delete_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3057 const struct ofputil_flow_mod
*fm
,
3058 const struct ofp_header
*request
)
3063 error
= collect_rules_strict(ofproto
, fm
->table_id
, &fm
->cr
,
3064 fm
->cookie
, fm
->cookie_mask
,
3065 fm
->out_port
, &rules
);
3066 return (error
? error
3067 : list_is_singleton(&rules
) ? delete_flows__(ofproto
, ofconn
,
3073 ofproto_rule_send_removed(struct rule
*rule
, uint8_t reason
)
3075 struct ofputil_flow_removed fr
;
3077 if (rule_is_hidden(rule
) || !rule
->send_flow_removed
) {
3082 fr
.cookie
= rule
->flow_cookie
;
3084 calc_flow_duration__(rule
->created
, time_msec(),
3085 &fr
.duration_sec
, &fr
.duration_nsec
);
3086 fr
.idle_timeout
= rule
->idle_timeout
;
3087 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
, &fr
.packet_count
,
3090 connmgr_send_flow_removed(rule
->ofproto
->connmgr
, &fr
);
3094 ofproto_rule_update_used(struct rule
*rule
, long long int used
)
3096 if (used
> rule
->used
) {
3097 struct eviction_group
*evg
= rule
->eviction_group
;
3101 heap_change(&evg
->rules
, &rule
->evg_node
,
3102 rule_eviction_priority(rule
));
3107 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
3108 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
3111 * ofproto implementation ->run() functions should use this function to expire
3112 * OpenFlow flows. */
3114 ofproto_rule_expire(struct rule
*rule
, uint8_t reason
)
3116 struct ofproto
*ofproto
= rule
->ofproto
;
3117 struct ofopgroup
*group
;
3119 assert(reason
== OFPRR_HARD_TIMEOUT
|| reason
== OFPRR_IDLE_TIMEOUT
);
3121 ofproto_rule_send_removed(rule
, reason
);
3123 group
= ofopgroup_create_unattached(ofproto
);
3124 ofoperation_create(group
, rule
, OFOPERATION_DELETE
);
3125 oftable_remove_rule(rule
);
3126 ofproto
->ofproto_class
->rule_destruct(rule
);
3127 ofopgroup_submit(group
);
3131 handle_flow_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3133 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3134 struct ofputil_flow_mod fm
;
3135 uint64_t ofpacts_stub
[1024 / 8];
3136 struct ofpbuf ofpacts
;
3140 error
= reject_slave_controller(ofconn
);
3145 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3146 error
= ofputil_decode_flow_mod(&fm
, oh
, ofconn_get_protocol(ofconn
),
3149 goto exit_free_ofpacts
;
3152 /* We do not support the OpenFlow 1.0 emergency flow cache, which is not
3153 * required in OpenFlow 1.0.1 and removed from OpenFlow 1.1. */
3154 if (fm
.flags
& OFPFF_EMERG
) {
3155 /* We do not support the emergency flow cache. It will hopefully get
3156 * dropped from OpenFlow in the near future. There is no good error
3157 * code, so just state that the flow table is full. */
3158 error
= OFPERR_OFPFMFC_ALL_TABLES_FULL
;
3160 error
= handle_flow_mod__(ofconn_get_ofproto(ofconn
), ofconn
, &fm
, oh
);
3163 goto exit_free_ofpacts
;
3166 /* Record the operation for logging a summary report. */
3167 switch (fm
.command
) {
3173 case OFPFC_MODIFY_STRICT
:
3174 ofproto
->n_modify
++;
3178 case OFPFC_DELETE_STRICT
:
3179 ofproto
->n_delete
++;
3184 if (ofproto
->next_op_report
== LLONG_MAX
) {
3185 ofproto
->first_op
= now
;
3186 ofproto
->next_op_report
= MAX(now
+ 10 * 1000,
3187 ofproto
->op_backoff
);
3188 ofproto
->op_backoff
= ofproto
->next_op_report
+ 60 * 1000;
3190 ofproto
->last_op
= now
;
3193 ofpbuf_uninit(&ofpacts
);
3199 handle_flow_mod__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3200 const struct ofputil_flow_mod
*fm
,
3201 const struct ofp_header
*oh
)
3203 if (ofproto
->n_pending
>= 50) {
3204 assert(!list_is_empty(&ofproto
->pending
));
3205 return OFPROTO_POSTPONE
;
3208 switch (fm
->command
) {
3210 return add_flow(ofproto
, ofconn
, fm
, oh
);
3213 return modify_flows_loose(ofproto
, ofconn
, fm
, oh
);
3215 case OFPFC_MODIFY_STRICT
:
3216 return modify_flow_strict(ofproto
, ofconn
, fm
, oh
);
3219 return delete_flows_loose(ofproto
, ofconn
, fm
, oh
);
3221 case OFPFC_DELETE_STRICT
:
3222 return delete_flow_strict(ofproto
, ofconn
, fm
, oh
);
3225 if (fm
->command
> 0xff) {
3226 VLOG_WARN_RL(&rl
, "%s: flow_mod has explicit table_id but "
3227 "flow_mod_table_id extension is not enabled",
3230 return OFPERR_OFPFMFC_BAD_COMMAND
;
3235 handle_role_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3237 struct nx_role_request
*nrr
= (struct nx_role_request
*) oh
;
3238 struct nx_role_request
*reply
;
3242 role
= ntohl(nrr
->role
);
3243 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
3244 && role
!= NX_ROLE_SLAVE
) {
3245 return OFPERR_OFPRRFC_BAD_ROLE
;
3248 if (ofconn_get_role(ofconn
) != role
3249 && ofconn_has_pending_opgroups(ofconn
)) {
3250 return OFPROTO_POSTPONE
;
3253 ofconn_set_role(ofconn
, role
);
3255 reply
= make_nxmsg_xid(sizeof *reply
, NXT_ROLE_REPLY
, oh
->xid
, &buf
);
3256 reply
->role
= htonl(role
);
3257 ofconn_send_reply(ofconn
, buf
);
3263 handle_nxt_flow_mod_table_id(struct ofconn
*ofconn
,
3264 const struct ofp_header
*oh
)
3266 const struct nx_flow_mod_table_id
*msg
3267 = (const struct nx_flow_mod_table_id
*) oh
;
3268 enum ofputil_protocol cur
, next
;
3270 cur
= ofconn_get_protocol(ofconn
);
3271 next
= ofputil_protocol_set_tid(cur
, msg
->set
!= 0);
3272 ofconn_set_protocol(ofconn
, next
);
3278 handle_nxt_set_flow_format(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3280 const struct nx_set_flow_format
*msg
3281 = (const struct nx_set_flow_format
*) oh
;
3282 enum ofputil_protocol cur
, next
;
3283 enum ofputil_protocol next_base
;
3285 next_base
= ofputil_nx_flow_format_to_protocol(ntohl(msg
->format
));
3287 return OFPERR_OFPBRC_EPERM
;
3290 cur
= ofconn_get_protocol(ofconn
);
3291 next
= ofputil_protocol_set_base(cur
, next_base
);
3292 if (cur
!= next
&& ofconn_has_pending_opgroups(ofconn
)) {
3293 /* Avoid sending async messages in surprising protocol. */
3294 return OFPROTO_POSTPONE
;
3297 ofconn_set_protocol(ofconn
, next
);
3302 handle_nxt_set_packet_in_format(struct ofconn
*ofconn
,
3303 const struct ofp_header
*oh
)
3305 const struct nx_set_packet_in_format
*msg
;
3308 msg
= (const struct nx_set_packet_in_format
*) oh
;
3309 format
= ntohl(msg
->format
);
3310 if (format
!= NXPIF_OPENFLOW10
&& format
!= NXPIF_NXM
) {
3311 return OFPERR_OFPBRC_EPERM
;
3314 if (format
!= ofconn_get_packet_in_format(ofconn
)
3315 && ofconn_has_pending_opgroups(ofconn
)) {
3316 /* Avoid sending async message in surprsing packet in format. */
3317 return OFPROTO_POSTPONE
;
3320 ofconn_set_packet_in_format(ofconn
, format
);
3325 handle_nxt_set_async_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3327 const struct nx_async_config
*msg
= (const struct nx_async_config
*) oh
;
3328 uint32_t master
[OAM_N_TYPES
];
3329 uint32_t slave
[OAM_N_TYPES
];
3331 master
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[0]);
3332 master
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[0]);
3333 master
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[0]);
3335 slave
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[1]);
3336 slave
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[1]);
3337 slave
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[1]);
3339 ofconn_set_async_config(ofconn
, master
, slave
);
3340 if (ofconn_get_type(ofconn
) == OFCONN_SERVICE
&&
3341 !ofconn_get_miss_send_len(ofconn
)) {
3342 ofconn_set_miss_send_len(ofconn
, OFP_DEFAULT_MISS_SEND_LEN
);
3349 handle_nxt_set_controller_id(struct ofconn
*ofconn
,
3350 const struct ofp_header
*oh
)
3352 const struct nx_controller_id
*nci
;
3354 nci
= (const struct nx_controller_id
*) oh
;
3355 if (!is_all_zeros(nci
->zero
, sizeof nci
->zero
)) {
3356 return OFPERR_NXBRC_MUST_BE_ZERO
;
3359 ofconn_set_controller_id(ofconn
, ntohs(nci
->controller_id
));
3364 handle_barrier_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3368 if (ofconn_has_pending_opgroups(ofconn
)) {
3369 return OFPROTO_POSTPONE
;
3372 make_openflow_xid(sizeof *oh
, OFPT10_BARRIER_REPLY
, oh
->xid
, &buf
);
3373 ofconn_send_reply(ofconn
, buf
);
3378 handle_openflow__(struct ofconn
*ofconn
, const struct ofpbuf
*msg
)
3380 const struct ofp_header
*oh
= msg
->data
;
3381 const struct ofputil_msg_type
*type
;
3384 error
= ofputil_decode_msg_type(oh
, &type
);
3389 switch (ofputil_msg_type_code(type
)) {
3390 /* OpenFlow requests. */
3391 case OFPUTIL_OFPT_ECHO_REQUEST
:
3392 return handle_echo_request(ofconn
, oh
);
3394 case OFPUTIL_OFPT_FEATURES_REQUEST
:
3395 return handle_features_request(ofconn
, oh
);
3397 case OFPUTIL_OFPT_GET_CONFIG_REQUEST
:
3398 return handle_get_config_request(ofconn
, oh
);
3400 case OFPUTIL_OFPT_SET_CONFIG
:
3401 return handle_set_config(ofconn
, msg
->data
);
3403 case OFPUTIL_OFPT_PACKET_OUT
:
3404 return handle_packet_out(ofconn
, msg
->data
);
3406 case OFPUTIL_OFPT_PORT_MOD
:
3407 return handle_port_mod(ofconn
, oh
);
3409 case OFPUTIL_OFPT_FLOW_MOD
:
3410 return handle_flow_mod(ofconn
, oh
);
3412 case OFPUTIL_OFPT_BARRIER_REQUEST
:
3413 return handle_barrier_request(ofconn
, oh
);
3415 /* OpenFlow replies. */
3416 case OFPUTIL_OFPT_ECHO_REPLY
:
3419 /* Nicira extension requests. */
3420 case OFPUTIL_NXT_ROLE_REQUEST
:
3421 return handle_role_request(ofconn
, oh
);
3423 case OFPUTIL_NXT_FLOW_MOD_TABLE_ID
:
3424 return handle_nxt_flow_mod_table_id(ofconn
, oh
);
3426 case OFPUTIL_NXT_SET_FLOW_FORMAT
:
3427 return handle_nxt_set_flow_format(ofconn
, oh
);
3429 case OFPUTIL_NXT_SET_PACKET_IN_FORMAT
:
3430 return handle_nxt_set_packet_in_format(ofconn
, oh
);
3432 case OFPUTIL_NXT_SET_CONTROLLER_ID
:
3433 return handle_nxt_set_controller_id(ofconn
, oh
);
3435 case OFPUTIL_NXT_FLOW_MOD
:
3436 return handle_flow_mod(ofconn
, oh
);
3438 case OFPUTIL_NXT_FLOW_AGE
:
3439 /* Nothing to do. */
3442 case OFPUTIL_NXT_SET_ASYNC_CONFIG
:
3443 return handle_nxt_set_async_config(ofconn
, oh
);
3445 /* Statistics requests. */
3446 case OFPUTIL_OFPST_DESC_REQUEST
:
3447 return handle_desc_stats_request(ofconn
, msg
->data
);
3449 case OFPUTIL_OFPST_FLOW_REQUEST
:
3450 case OFPUTIL_NXST_FLOW_REQUEST
:
3451 return handle_flow_stats_request(ofconn
, msg
->data
);
3453 case OFPUTIL_OFPST_AGGREGATE_REQUEST
:
3454 case OFPUTIL_NXST_AGGREGATE_REQUEST
:
3455 return handle_aggregate_stats_request(ofconn
, msg
->data
);
3457 case OFPUTIL_OFPST_TABLE_REQUEST
:
3458 return handle_table_stats_request(ofconn
, msg
->data
);
3460 case OFPUTIL_OFPST_PORT_REQUEST
:
3461 return handle_port_stats_request(ofconn
, msg
->data
);
3463 case OFPUTIL_OFPST_QUEUE_REQUEST
:
3464 return handle_queue_stats_request(ofconn
, msg
->data
);
3466 case OFPUTIL_OFPST_PORT_DESC_REQUEST
:
3467 return handle_port_desc_stats_request(ofconn
, msg
->data
);
3469 case OFPUTIL_MSG_INVALID
:
3470 case OFPUTIL_OFPT_HELLO
:
3471 case OFPUTIL_OFPT_ERROR
:
3472 case OFPUTIL_OFPT_FEATURES_REPLY
:
3473 case OFPUTIL_OFPT_GET_CONFIG_REPLY
:
3474 case OFPUTIL_OFPT_PACKET_IN
:
3475 case OFPUTIL_OFPT_FLOW_REMOVED
:
3476 case OFPUTIL_OFPT_PORT_STATUS
:
3477 case OFPUTIL_OFPT_BARRIER_REPLY
:
3478 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST
:
3479 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY
:
3480 case OFPUTIL_OFPST_DESC_REPLY
:
3481 case OFPUTIL_OFPST_FLOW_REPLY
:
3482 case OFPUTIL_OFPST_QUEUE_REPLY
:
3483 case OFPUTIL_OFPST_PORT_REPLY
:
3484 case OFPUTIL_OFPST_TABLE_REPLY
:
3485 case OFPUTIL_OFPST_AGGREGATE_REPLY
:
3486 case OFPUTIL_OFPST_PORT_DESC_REPLY
:
3487 case OFPUTIL_NXT_ROLE_REPLY
:
3488 case OFPUTIL_NXT_FLOW_REMOVED
:
3489 case OFPUTIL_NXT_PACKET_IN
:
3490 case OFPUTIL_NXST_FLOW_REPLY
:
3491 case OFPUTIL_NXST_AGGREGATE_REPLY
:
3493 return (oh
->type
== OFPT10_STATS_REQUEST
||
3494 oh
->type
== OFPT10_STATS_REPLY
3495 ? OFPERR_OFPBRC_BAD_STAT
3496 : OFPERR_OFPBRC_BAD_TYPE
);
3501 handle_openflow(struct ofconn
*ofconn
, struct ofpbuf
*ofp_msg
)
3503 int error
= handle_openflow__(ofconn
, ofp_msg
);
3504 if (error
&& error
!= OFPROTO_POSTPONE
) {
3505 ofconn_send_error(ofconn
, ofp_msg
->data
, error
);
3507 COVERAGE_INC(ofproto_recv_openflow
);
3508 return error
!= OFPROTO_POSTPONE
;
3511 /* Asynchronous operations. */
3513 /* Creates and returns a new ofopgroup that is not associated with any
3514 * OpenFlow connection.
3516 * The caller should add operations to the returned group with
3517 * ofoperation_create() and then submit it with ofopgroup_submit(). */
3518 static struct ofopgroup
*
3519 ofopgroup_create_unattached(struct ofproto
*ofproto
)
3521 struct ofopgroup
*group
= xzalloc(sizeof *group
);
3522 group
->ofproto
= ofproto
;
3523 list_init(&group
->ofproto_node
);
3524 list_init(&group
->ops
);
3525 list_init(&group
->ofconn_node
);
3529 /* Creates and returns a new ofopgroup for 'ofproto'.
3531 * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
3532 * connection. The 'request' and 'buffer_id' arguments are ignored.
3534 * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
3535 * If the ofopgroup eventually fails, then the error reply will include
3536 * 'request'. If the ofopgroup eventually succeeds, then the packet with
3537 * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
3539 * The caller should add operations to the returned group with
3540 * ofoperation_create() and then submit it with ofopgroup_submit(). */
3541 static struct ofopgroup
*
3542 ofopgroup_create(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3543 const struct ofp_header
*request
, uint32_t buffer_id
)
3545 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
3547 size_t request_len
= ntohs(request
->length
);
3549 assert(ofconn_get_ofproto(ofconn
) == ofproto
);
3551 ofconn_add_opgroup(ofconn
, &group
->ofconn_node
);
3552 group
->ofconn
= ofconn
;
3553 group
->request
= xmemdup(request
, MIN(request_len
, 64));
3554 group
->buffer_id
= buffer_id
;
3559 /* Submits 'group' for processing.
3561 * If 'group' contains no operations (e.g. none were ever added, or all of the
3562 * ones that were added completed synchronously), then it is destroyed
3563 * immediately. Otherwise it is added to the ofproto's list of pending
3566 ofopgroup_submit(struct ofopgroup
*group
)
3568 if (list_is_empty(&group
->ops
)) {
3569 ofopgroup_destroy(group
);
3571 list_push_back(&group
->ofproto
->pending
, &group
->ofproto_node
);
3572 group
->ofproto
->n_pending
++;
3577 ofopgroup_destroy(struct ofopgroup
*group
)
3579 assert(list_is_empty(&group
->ops
));
3580 if (!list_is_empty(&group
->ofproto_node
)) {
3581 assert(group
->ofproto
->n_pending
> 0);
3582 group
->ofproto
->n_pending
--;
3583 list_remove(&group
->ofproto_node
);
3585 if (!list_is_empty(&group
->ofconn_node
)) {
3586 list_remove(&group
->ofconn_node
);
3588 ofconn_send_error(group
->ofconn
, group
->request
, group
->error
);
3590 connmgr_retry(group
->ofproto
->connmgr
);
3592 free(group
->request
);
3596 /* Initiates a new operation on 'rule', of the specified 'type', within
3597 * 'group'. Prior to calling, 'rule' must not have any pending operation. */
3599 ofoperation_create(struct ofopgroup
*group
, struct rule
*rule
,
3600 enum ofoperation_type type
)
3602 struct ofproto
*ofproto
= group
->ofproto
;
3603 struct ofoperation
*op
;
3605 assert(!rule
->pending
);
3607 op
= rule
->pending
= xzalloc(sizeof *op
);
3609 list_push_back(&group
->ops
, &op
->group_node
);
3612 op
->flow_cookie
= rule
->flow_cookie
;
3614 if (type
== OFOPERATION_DELETE
) {
3615 hmap_insert(&ofproto
->deletions
, &op
->hmap_node
,
3616 cls_rule_hash(&rule
->cr
, rule
->table_id
));
3621 ofoperation_destroy(struct ofoperation
*op
)
3623 struct ofopgroup
*group
= op
->group
;
3626 op
->rule
->pending
= NULL
;
3628 if (op
->type
== OFOPERATION_DELETE
) {
3629 hmap_remove(&group
->ofproto
->deletions
, &op
->hmap_node
);
3631 list_remove(&op
->group_node
);
3635 if (list_is_empty(&group
->ops
) && !list_is_empty(&group
->ofproto_node
)) {
3636 ofopgroup_destroy(group
);
3640 /* Indicates that 'op' completed with status 'error', which is either 0 to
3641 * indicate success or an OpenFlow error code on failure.
3643 * If 'error' is 0, indicating success, the operation will be committed
3644 * permanently to the flow table. There is one interesting subcase:
3646 * - If 'op' is an "add flow" operation that is replacing an existing rule in
3647 * the flow table (the "victim" rule) by a new one, then the caller must
3648 * have uninitialized any derived state in the victim rule, as in step 5 in
3649 * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete()
3650 * performs steps 6 and 7 for the victim rule, most notably by calling its
3651 * ->rule_dealloc() function.
3653 * If 'error' is nonzero, then generally the operation will be rolled back:
3655 * - If 'op' is an "add flow" operation, ofproto removes the new rule or
3656 * restores the original rule. The caller must have uninitialized any
3657 * derived state in the new rule, as in step 5 of in the "Life Cycle" in
3658 * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
3659 * and 7 for the new rule, calling its ->rule_dealloc() function.
3661 * - If 'op' is a "modify flow" operation, ofproto restores the original
3664 * - 'op' must not be a "delete flow" operation. Removing a rule is not
3665 * allowed to fail. It must always succeed.
3667 * Please see the large comment in ofproto/ofproto-provider.h titled
3668 * "Asynchronous Operation Support" for more information. */
3670 ofoperation_complete(struct ofoperation
*op
, enum ofperr error
)
3672 struct ofopgroup
*group
= op
->group
;
3673 struct rule
*rule
= op
->rule
;
3674 struct ofproto
*ofproto
= rule
->ofproto
;
3676 assert(rule
->pending
== op
);
3680 && op
->type
!= OFOPERATION_DELETE
3682 && group
->buffer_id
!= UINT32_MAX
3683 && list_is_singleton(&op
->group_node
)) {
3684 struct ofpbuf
*packet
;
3687 error
= ofconn_pktbuf_retrieve(group
->ofconn
, group
->buffer_id
,
3691 error
= rule_execute(rule
, in_port
, packet
);
3694 if (!group
->error
) {
3695 group
->error
= error
;
3699 case OFOPERATION_ADD
:
3701 ofproto_rule_destroy__(op
->victim
);
3702 if ((rule
->cr
.wc
.vlan_tci_mask
& htons(VLAN_VID_MASK
))
3703 == htons(VLAN_VID_MASK
)) {
3704 if (ofproto
->vlan_bitmap
) {
3705 uint16_t vid
= vlan_tci_to_vid(rule
->cr
.flow
.vlan_tci
);
3707 if (!bitmap_is_set(ofproto
->vlan_bitmap
, vid
)) {
3708 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
3709 ofproto
->vlans_changed
= true;
3712 ofproto
->vlans_changed
= true;
3716 oftable_substitute_rule(rule
, op
->victim
);
3717 ofproto_rule_destroy__(rule
);
3722 case OFOPERATION_DELETE
:
3724 ofproto_rule_destroy__(rule
);
3728 case OFOPERATION_MODIFY
:
3730 rule
->modified
= time_msec();
3732 free(rule
->ofpacts
);
3733 rule
->ofpacts
= op
->ofpacts
;
3734 rule
->ofpacts_len
= op
->ofpacts_len
;
3742 ofoperation_destroy(op
);
3746 ofoperation_get_victim(struct ofoperation
*op
)
3748 assert(op
->type
== OFOPERATION_ADD
);
3753 pick_datapath_id(const struct ofproto
*ofproto
)
3755 const struct ofport
*port
;
3757 port
= ofproto_get_port(ofproto
, OFPP_LOCAL
);
3759 uint8_t ea
[ETH_ADDR_LEN
];
3762 error
= netdev_get_etheraddr(port
->netdev
, ea
);
3764 return eth_addr_to_uint64(ea
);
3766 VLOG_WARN("%s: could not get MAC address for %s (%s)",
3767 ofproto
->name
, netdev_get_name(port
->netdev
),
3770 return ofproto
->fallback_dpid
;
3774 pick_fallback_dpid(void)
3776 uint8_t ea
[ETH_ADDR_LEN
];
3777 eth_addr_nicira_random(ea
);
3778 return eth_addr_to_uint64(ea
);
3781 /* Table overflow policy. */
3783 /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table
3784 * is not configured to evict rules or if the table contains no evictable
3785 * rules. (Rules with 'evictable' set to false or with no timeouts are not
3787 static struct rule
*
3788 choose_rule_to_evict(struct oftable
*table
)
3790 struct eviction_group
*evg
;
3792 if (!table
->eviction_fields
) {
3796 /* In the common case, the outer and inner loops here will each be entered
3799 * - The inner loop normally "return"s in its first iteration. If the
3800 * eviction group has any evictable rules, then it always returns in
3803 * - The outer loop only iterates more than once if the largest eviction
3804 * group has no evictable rules.
3806 * - The outer loop can exit only if table's 'max_flows' is all filled up
3807 * by unevictable rules'. */
3808 HEAP_FOR_EACH (evg
, size_node
, &table
->eviction_groups_by_size
) {
3811 HEAP_FOR_EACH (rule
, evg_node
, &evg
->rules
) {
3812 if (rule
->evictable
) {
3821 /* Searches 'ofproto' for tables that have more flows than their configured
3822 * maximum and that have flow eviction enabled, and evicts as many flows as
3823 * necessary and currently feasible from them.
3825 * This triggers only when an OpenFlow table has N flows in it and then the
3826 * client configures a maximum number of flows less than N. */
3828 ofproto_evict(struct ofproto
*ofproto
)
3830 struct ofopgroup
*group
;
3831 struct oftable
*table
;
3833 group
= ofopgroup_create_unattached(ofproto
);
3834 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
3835 while (classifier_count(&table
->cls
) > table
->max_flows
3836 && table
->eviction_fields
) {
3839 rule
= choose_rule_to_evict(table
);
3840 if (!rule
|| rule
->pending
) {
3844 ofoperation_create(group
, rule
, OFOPERATION_DELETE
);
3845 oftable_remove_rule(rule
);
3846 ofproto
->ofproto_class
->rule_destruct(rule
);
3849 ofopgroup_submit(group
);
3852 /* Eviction groups. */
3854 /* Returns the priority to use for an eviction_group that contains 'n_rules'
3855 * rules. The priority contains low-order random bits to ensure that eviction
3856 * groups with the same number of rules are prioritized randomly. */
3858 eviction_group_priority(size_t n_rules
)
3860 uint16_t size
= MIN(UINT16_MAX
, n_rules
);
3861 return (size
<< 16) | random_uint16();
3864 /* Updates 'evg', an eviction_group within 'table', following a change that
3865 * adds or removes rules in 'evg'. */
3867 eviction_group_resized(struct oftable
*table
, struct eviction_group
*evg
)
3869 heap_change(&table
->eviction_groups_by_size
, &evg
->size_node
,
3870 eviction_group_priority(heap_count(&evg
->rules
)));
3873 /* Destroys 'evg', an eviction_group within 'table':
3875 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
3876 * rules themselves, just removes them from the eviction group.)
3878 * - Removes 'evg' from 'table'.
3882 eviction_group_destroy(struct oftable
*table
, struct eviction_group
*evg
)
3884 while (!heap_is_empty(&evg
->rules
)) {
3887 rule
= CONTAINER_OF(heap_pop(&evg
->rules
), struct rule
, evg_node
);
3888 rule
->eviction_group
= NULL
;
3890 hmap_remove(&table
->eviction_groups_by_id
, &evg
->id_node
);
3891 heap_remove(&table
->eviction_groups_by_size
, &evg
->size_node
);
3892 heap_destroy(&evg
->rules
);
3896 /* Removes 'rule' from its eviction group, if any. */
3898 eviction_group_remove_rule(struct rule
*rule
)
3900 if (rule
->eviction_group
) {
3901 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
3902 struct eviction_group
*evg
= rule
->eviction_group
;
3904 rule
->eviction_group
= NULL
;
3905 heap_remove(&evg
->rules
, &rule
->evg_node
);
3906 if (heap_is_empty(&evg
->rules
)) {
3907 eviction_group_destroy(table
, evg
);
3909 eviction_group_resized(table
, evg
);
3914 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
3915 * returns the hash value. */
3917 eviction_group_hash_rule(struct rule
*rule
)
3919 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
3920 const struct mf_subfield
*sf
;
3923 hash
= table
->eviction_group_id_basis
;
3924 for (sf
= table
->eviction_fields
;
3925 sf
< &table
->eviction_fields
[table
->n_eviction_fields
];
3928 if (mf_are_prereqs_ok(sf
->field
, &rule
->cr
.flow
)) {
3929 union mf_value value
;
3931 mf_get_value(sf
->field
, &rule
->cr
.flow
, &value
);
3933 bitwise_zero(&value
, sf
->field
->n_bytes
, 0, sf
->ofs
);
3935 if (sf
->ofs
+ sf
->n_bits
< sf
->field
->n_bytes
* 8) {
3936 unsigned int start
= sf
->ofs
+ sf
->n_bits
;
3937 bitwise_zero(&value
, sf
->field
->n_bytes
, start
,
3938 sf
->field
->n_bytes
* 8 - start
);
3940 hash
= hash_bytes(&value
, sf
->field
->n_bytes
, hash
);
3942 hash
= hash_int(hash
, 0);
3949 /* Returns an eviction group within 'table' with the given 'id', creating one
3951 static struct eviction_group
*
3952 eviction_group_find(struct oftable
*table
, uint32_t id
)
3954 struct eviction_group
*evg
;
3956 HMAP_FOR_EACH_WITH_HASH (evg
, id_node
, id
, &table
->eviction_groups_by_id
) {
3960 evg
= xmalloc(sizeof *evg
);
3961 hmap_insert(&table
->eviction_groups_by_id
, &evg
->id_node
, id
);
3962 heap_insert(&table
->eviction_groups_by_size
, &evg
->size_node
,
3963 eviction_group_priority(0));
3964 heap_init(&evg
->rules
);
3969 /* Returns an eviction priority for 'rule'. The return value should be
3970 * interpreted so that higher priorities make a rule more attractive candidates
3973 rule_eviction_priority(struct rule
*rule
)
3975 long long int hard_expiration
;
3976 long long int idle_expiration
;
3977 long long int expiration
;
3978 uint32_t expiration_offset
;
3980 /* Calculate time of expiration. */
3981 hard_expiration
= (rule
->hard_timeout
3982 ? rule
->modified
+ rule
->hard_timeout
* 1000
3984 idle_expiration
= (rule
->idle_timeout
3985 ? rule
->used
+ rule
->idle_timeout
* 1000
3987 expiration
= MIN(hard_expiration
, idle_expiration
);
3988 if (expiration
== LLONG_MAX
) {
3992 /* Calculate the time of expiration as a number of (approximate) seconds
3993 * after program startup.
3995 * This should work OK for program runs that last UINT32_MAX seconds or
3996 * less. Therefore, please restart OVS at least once every 136 years. */
3997 expiration_offset
= (expiration
>> 10) - (time_boot_msec() >> 10);
3999 /* Invert the expiration offset because we're using a max-heap. */
4000 return UINT32_MAX
- expiration_offset
;
4003 /* Adds 'rule' to an appropriate eviction group for its oftable's
4004 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
4005 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
4008 * The caller must ensure that 'rule' is not already in an eviction group. */
4010 eviction_group_add_rule(struct rule
*rule
)
4012 struct ofproto
*ofproto
= rule
->ofproto
;
4013 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4015 if (table
->eviction_fields
4016 && (rule
->hard_timeout
|| rule
->idle_timeout
)) {
4017 struct eviction_group
*evg
;
4019 evg
= eviction_group_find(table
, eviction_group_hash_rule(rule
));
4021 rule
->eviction_group
= evg
;
4022 heap_insert(&evg
->rules
, &rule
->evg_node
,
4023 rule_eviction_priority(rule
));
4024 eviction_group_resized(table
, evg
);
4030 /* Initializes 'table'. */
4032 oftable_init(struct oftable
*table
)
4034 memset(table
, 0, sizeof *table
);
4035 classifier_init(&table
->cls
);
4036 table
->max_flows
= UINT_MAX
;
4039 /* Destroys 'table', including its classifier and eviction groups.
4041 * The caller is responsible for freeing 'table' itself. */
4043 oftable_destroy(struct oftable
*table
)
4045 assert(classifier_is_empty(&table
->cls
));
4046 oftable_disable_eviction(table
);
4047 classifier_destroy(&table
->cls
);
4051 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
4052 * string, then 'table' will use its default name.
4054 * This only affects the name exposed for a table exposed through the OpenFlow
4055 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
4057 oftable_set_name(struct oftable
*table
, const char *name
)
4059 if (name
&& name
[0]) {
4060 int len
= strnlen(name
, OFP_MAX_TABLE_NAME_LEN
);
4061 if (!table
->name
|| strncmp(name
, table
->name
, len
)) {
4063 table
->name
= xmemdup0(name
, len
);
4071 /* oftables support a choice of two policies when adding a rule would cause the
4072 * number of flows in the table to exceed the configured maximum number: either
4073 * they can refuse to add the new flow or they can evict some existing flow.
4074 * This function configures the former policy on 'table'. */
4076 oftable_disable_eviction(struct oftable
*table
)
4078 if (table
->eviction_fields
) {
4079 struct eviction_group
*evg
, *next
;
4081 HMAP_FOR_EACH_SAFE (evg
, next
, id_node
,
4082 &table
->eviction_groups_by_id
) {
4083 eviction_group_destroy(table
, evg
);
4085 hmap_destroy(&table
->eviction_groups_by_id
);
4086 heap_destroy(&table
->eviction_groups_by_size
);
4088 free(table
->eviction_fields
);
4089 table
->eviction_fields
= NULL
;
4090 table
->n_eviction_fields
= 0;
4094 /* oftables support a choice of two policies when adding a rule would cause the
4095 * number of flows in the table to exceed the configured maximum number: either
4096 * they can refuse to add the new flow or they can evict some existing flow.
4097 * This function configures the latter policy on 'table', with fairness based
4098 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
4099 * 'n_fields' as 0 disables fairness.) */
4101 oftable_enable_eviction(struct oftable
*table
,
4102 const struct mf_subfield
*fields
, size_t n_fields
)
4104 struct cls_cursor cursor
;
4107 if (table
->eviction_fields
4108 && n_fields
== table
->n_eviction_fields
4110 || !memcmp(fields
, table
->eviction_fields
,
4111 n_fields
* sizeof *fields
))) {
4116 oftable_disable_eviction(table
);
4118 table
->n_eviction_fields
= n_fields
;
4119 table
->eviction_fields
= xmemdup(fields
, n_fields
* sizeof *fields
);
4121 table
->eviction_group_id_basis
= random_uint32();
4122 hmap_init(&table
->eviction_groups_by_id
);
4123 heap_init(&table
->eviction_groups_by_size
);
4125 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
4126 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
4127 eviction_group_add_rule(rule
);
4131 /* Removes 'rule' from the oftable that contains it. */
4133 oftable_remove_rule(struct rule
*rule
)
4135 struct ofproto
*ofproto
= rule
->ofproto
;
4136 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4138 classifier_remove(&table
->cls
, &rule
->cr
);
4139 eviction_group_remove_rule(rule
);
4142 /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s
4143 * oftable that has an identical cls_rule. Returns the rule that was removed,
4144 * if any, and otherwise NULL. */
4145 static struct rule
*
4146 oftable_replace_rule(struct rule
*rule
)
4148 struct ofproto
*ofproto
= rule
->ofproto
;
4149 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4150 struct rule
*victim
;
4152 victim
= rule_from_cls_rule(classifier_replace(&table
->cls
, &rule
->cr
));
4154 eviction_group_remove_rule(victim
);
4156 eviction_group_add_rule(rule
);
4160 /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */
4162 oftable_substitute_rule(struct rule
*old
, struct rule
*new)
4165 oftable_replace_rule(new);
4167 oftable_remove_rule(old
);
4171 /* unixctl commands. */
4174 ofproto_lookup(const char *name
)
4176 struct ofproto
*ofproto
;
4178 HMAP_FOR_EACH_WITH_HASH (ofproto
, hmap_node
, hash_string(name
, 0),
4180 if (!strcmp(ofproto
->name
, name
)) {
4188 ofproto_unixctl_list(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
4189 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
4191 struct ofproto
*ofproto
;
4195 HMAP_FOR_EACH (ofproto
, hmap_node
, &all_ofprotos
) {
4196 ds_put_format(&results
, "%s\n", ofproto
->name
);
4198 unixctl_command_reply(conn
, ds_cstr(&results
));
4199 ds_destroy(&results
);
4203 ofproto_unixctl_init(void)
4205 static bool registered
;
4211 unixctl_command_register("ofproto/list", "", 0, 0,
4212 ofproto_unixctl_list
, NULL
);
4215 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
4217 * This is deprecated. It is only for compatibility with broken device drivers
4218 * in old versions of Linux that do not properly support VLANs when VLAN
4219 * devices are not used. When broken device drivers are no longer in
4220 * widespread use, we will delete these interfaces. */
4222 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
4223 * (exactly) by an OpenFlow rule in 'ofproto'. */
4225 ofproto_get_vlan_usage(struct ofproto
*ofproto
, unsigned long int *vlan_bitmap
)
4227 const struct oftable
*oftable
;
4229 free(ofproto
->vlan_bitmap
);
4230 ofproto
->vlan_bitmap
= bitmap_allocate(4096);
4231 ofproto
->vlans_changed
= false;
4233 OFPROTO_FOR_EACH_TABLE (oftable
, ofproto
) {
4234 const struct cls_table
*table
;
4236 HMAP_FOR_EACH (table
, hmap_node
, &oftable
->cls
.tables
) {
4237 if ((table
->wc
.vlan_tci_mask
& htons(VLAN_VID_MASK
))
4238 == htons(VLAN_VID_MASK
)) {
4239 const struct cls_rule
*rule
;
4241 HMAP_FOR_EACH (rule
, hmap_node
, &table
->rules
) {
4242 uint16_t vid
= vlan_tci_to_vid(rule
->flow
.vlan_tci
);
4243 bitmap_set1(vlan_bitmap
, vid
);
4244 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
4251 /* Returns true if new VLANs have come into use by the flow table since the
4252 * last call to ofproto_get_vlan_usage().
4254 * We don't track when old VLANs stop being used. */
4256 ofproto_has_vlan_usage_changed(const struct ofproto
*ofproto
)
4258 return ofproto
->vlans_changed
;
4261 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
4262 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
4263 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
4264 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
4265 * then the VLAN device is un-enslaved. */
4267 ofproto_port_set_realdev(struct ofproto
*ofproto
, uint16_t vlandev_ofp_port
,
4268 uint16_t realdev_ofp_port
, int vid
)
4270 struct ofport
*ofport
;
4273 assert(vlandev_ofp_port
!= realdev_ofp_port
);
4275 ofport
= ofproto_get_port(ofproto
, vlandev_ofp_port
);
4277 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16
,
4278 ofproto
->name
, vlandev_ofp_port
);
4282 if (!ofproto
->ofproto_class
->set_realdev
) {
4283 if (!vlandev_ofp_port
) {
4286 VLOG_WARN("%s: vlan splinters not supported", ofproto
->name
);
4290 error
= ofproto
->ofproto_class
->set_realdev(ofport
, realdev_ofp_port
, vid
);
4292 VLOG_WARN("%s: setting realdev on port %"PRIu16
" (%s) failed (%s)",
4293 ofproto
->name
, vlandev_ofp_port
,
4294 netdev_get_name(ofport
->netdev
), strerror(error
));